Error Code 500

[olgatias]

On Windows 7 PC, installation finished successfully (Docker+Git+Chrome), logged in as superuser.
When creating the first task and uploading files (602 jpg files), I press Submit and get the following error after a few minutes:
Could not delete the task from the server Code: 500

What causes the error? How to avoid it?

[bsekachev]

@olgatias
What is an output of the command docker logs cvat?

[olgatias]

@bsekachev

Attached logs

whateverdp91628@DP91628 MINGW64 ~/cvat (develop) $ docker logs cvat 2019-07-31 08:07:14,763 INFO RPC interface 'supervisor' initialized 2019-07-31 08:07:14,765 CRIT Server 'unix_http_server' running without any HTTP authentication checking 2019-07-31 08:07:14,765 INFO supervisord started with pid 1 2019-07-31 08:07:15,779 INFO spawned: 'ssh-agent' with pid 8 2019-07-31 08:07:15,820 INFO spawned: 'git_status_updater' with pid 9 2019-07-31 08:07:15,891 INFO spawned: 'rqworker_low' with pid 10 2019-07-31 08:07:15,976 INFO spawned: 'runserver' with pid 12 2019-07-31 08:07:16,050 INFO spawned: 'rqworker_default_0' with pid 15 2019-07-31 08:07:16,155 INFO spawned: 'rqworker_default_1' with pid 16 2019-07-31 08:07:16,230 DEBG 'ssh-agent' stdout output: SSH_AUTH_SOCK=/tmp/ssh-agent.sock; export SSH_AUTH_SOCK; echo Agent pid 13;

2019-07-31 08:07:16,240 DEBG 'ssh-agent' stderr output:
debug2: fd 3 setting O_NONBLOCK

2019-07-31 08:07:16,337 DEBG 'git_status_updater' stderr output:
wait-for-it.sh: waiting for redis:6379 without a timeout

2019-07-31 08:07:16,423 DEBG 'rqworker_low' stderr output:
wait-for-it.sh: waiting for redis:6379 without a timeout

2019-07-31 08:07:16,607 DEBG 'runserver' stderr output:
wait-for-it.sh: waiting for db:5432 without a timeout

2019-07-31 08:07:16,620 DEBG 'git_status_updater' stderr output:
wait-for-it.sh: redis:6379 is available after 0 seconds

2019-07-31 08:07:16,666 DEBG 'rqworker_low' stderr output:
wait-for-it.sh: redis:6379 is available after 0 seconds

2019-07-31 08:07:16,707 DEBG 'git_status_updater' stderr output:
bash: cannot set terminal process group (-1): Inappropriate ioctl for device

2019-07-31 08:07:16,712 DEBG 'git_status_updater' stderr output:
bash: no job control in this shell

2019-07-31 08:07:16,725 DEBG 'rqworker_default_0' stderr output:
wait-for-it.sh: waiting for cvat_redis:6379 without a timeout

2019-07-31 08:07:16,788 DEBG 'rqworker_low' stderr output:
bash: cannot set terminal process group (-1): Inappropriate ioctl for device

2019-07-31 08:07:16,790 INFO success: ssh-agent entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
2019-07-31 08:07:16,790 INFO success: git_status_updater entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
2019-07-31 08:07:16,793 DEBG 'rqworker_low' stderr output:
bash: no job control in this shell

2019-07-31 08:07:16,836 DEBG 'rqworker_default_1' stderr output:
wait-for-it.sh: waiting for cvat_redis:6379 without a timeout

2019-07-31 08:07:16,863 DEBG 'runserver' stderr output:
wait-for-it.sh: db:5432 is available after 0 seconds

2019-07-31 08:07:16,864 INFO success: rqworker_low entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
2019-07-31 08:07:16,944 DEBG 'runserver' stderr output:
bash: cannot set terminal process group (-1): Inappropriate ioctl for device

2019-07-31 08:07:16,946 INFO success: runserver entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
2019-07-31 08:07:16,947 DEBG 'runserver' stderr output:
bash: no job control in this shell

2019-07-31 08:07:16,983 DEBG 'rqworker_default_0' stderr output:
wait-for-it.sh: cvat_redis:6379 is available after 0 seconds

2019-07-31 08:07:17,046 DEBG 'rqworker_default_0' stderr output:
bash: cannot set terminal process group (-1): Inappropriate ioctl for device

2019-07-31 08:07:17,048 INFO success: rqworker_default_0 entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
2019-07-31 08:07:17,059 DEBG 'rqworker_default_0' stderr output:
bash: no job control in this shell

2019-07-31 08:07:17,087 DEBG 'rqworker_default_1' stderr output:
wait-for-it.sh: cvat_redis:6379 is available after 1 seconds

2019-07-31 08:07:17,088 INFO success: rqworker_default_1 entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
2019-07-31 08:07:17,154 DEBG 'rqworker_default_1' stderr output:
bash: cannot set terminal process group (-1): Inappropriate ioctl for device

2019-07-31 08:07:17,156 DEBG 'rqworker_default_1' stderr output:
bash: no job control in this shell

2019-07-31 08:07:18,572 DEBG 'ssh-agent' stderr output:
debug2: fd 4 setting O_NONBLOCK

2019-07-31 08:07:18,585 DEBG 'ssh-agent' stderr output:
debug1: XXX shrink: 3 < 4

2019-07-31 08:07:18,686 DEBG 'ssh-agent' stderr output:
debug2: fd 4 setting O_NONBLOCK

2019-07-31 08:07:18,688 DEBG 'ssh-agent' stderr output:
debug1: type 11

2019-07-31 08:07:18,690 DEBG 'ssh-agent' stderr output:
debug1: XXX shrink: 3 < 4

2019-07-31 08:07:18,750 DEBG 'ssh-agent' stderr output:
debug2: fd 4 setting O_NONBLOCK

2019-07-31 08:07:18,759 DEBG 'ssh-agent' stderr output:
debug1: type 17

2019-07-31 08:07:18,761 DEBG 'git_status_updater' stderr output:
Identity added: /home/django/.ssh/id_rsa (/home/django/.ssh/id_rsa)

2019-07-31 08:07:18,772 DEBG 'ssh-agent' stderr output:
debug1: XXX shrink: 3 < 4

2019-07-31 08:07:18,817 DEBG 'ssh-agent' stderr output:
debug2: fd 4 setting O_NONBLOCK

2019-07-31 08:07:18,828 DEBG 'ssh-agent' stderr output:
debug1: type 17

2019-07-31 08:07:18,832 DEBG 'ssh-agent' stderr output:
debug1: XXX shrink: 3 < 4

2019-07-31 08:07:18,880 DEBG 'ssh-agent' stderr output:
debug2: fd 4 setting O_NONBLOCK

2019-07-31 08:07:18,887 DEBG 'ssh-agent' stderr output:
debug1: type 11

2019-07-31 08:07:18,888 DEBG 'ssh-agent' stderr output:
debug1: XXX shrink: 3 < 4

2019-07-31 08:07:18,959 DEBG 'ssh-agent' stderr output:
debug2: fd 4 setting O_NONBLOCK

2019-07-31 08:07:18,976 DEBG 'ssh-agent' stderr output:
debug1: type 17

2019-07-31 08:07:18,979 DEBG 'ssh-agent' stderr output:
debug1: XXX shrink: 3 < 4

2019-07-31 08:07:19,047 DEBG 'ssh-agent' stderr output:
debug2: fd 4 setting O_NONBLOCK

2019-07-31 08:07:19,049 DEBG 'ssh-agent' stderr output:
debug1: type 11

2019-07-31 08:07:19,054 DEBG 'ssh-agent' stderr output:
debug1: XXX shrink: 3 < 4

2019-07-31 08:07:19,147 DEBG 'ssh-agent' stderr output:
debug2: fd 4 setting O_NONBLOCK

2019-07-31 08:07:19,165 DEBG 'ssh-agent' stderr output:
debug1: type 17

2019-07-31 08:07:19,173 DEBG 'ssh-agent' stderr output:
debug1: XXX shrink: 3 < 4

2019-07-31 08:07:19,258 DEBG 'ssh-agent' stderr output:
debug2: fd 4 setting O_NONBLOCK

2019-07-31 08:07:19,269 DEBG 'ssh-agent' stderr output:
debug1: type 11

2019-07-31 08:07:19,270 DEBG 'ssh-agent' stderr output:
debug1: XXX shrink: 3 < 4

2019-07-31 08:07:19,387 DEBG 'ssh-agent' stderr output:
debug2: fd 4 setting O_NONBLOCK

2019-07-31 08:07:19,411 DEBG 'ssh-agent' stderr output:
debug1: type 17

2019-07-31 08:07:19,417 DEBG 'ssh-agent' stderr output:
debug1: XXX shrink: 3 < 4

2019-07-31 08:07:19,535 DEBG 'ssh-agent' stderr output:
debug2: fd 4 setting O_NONBLOCK

2019-07-31 08:07:19,539 DEBG 'ssh-agent' stderr output:
debug1: type 11

2019-07-31 08:07:19,542 DEBG 'ssh-agent' stderr output:
debug1: XXX shrink: 3 < 4

2019-07-31 08:07:33,788 DEBG 'rqworker_low' stderr output:
System check identified some issues:

WARNINGS:
?: (2_0.W001) Your URL pattern 'api/swagger.slug:format$' [name='schema-json'] has a route that contains '(?P<', begins with a '^', or ends with a '$'. This was likely an oversight when migrating to django.urls.path().
08:07:33 RQ worker 'rq:worker:0c2e4a05db15477dbaf8a59e9108236f' started, version 1.0

2019-07-31 08:07:33,804 DEBG 'rqworker_low' stderr output:
08:07:33 *** Listening on low...

2019-07-31 08:07:33,810 DEBG 'rqworker_low' stderr output:
08:07:33 Cleaning registries for queue: low

2019-07-31 08:07:34,141 DEBG 'rqworker_default_1' stderr output:
System check identified some issues:

WARNINGS:
?: (2_0.W001) Your URL pattern 'api/swagger.slug:format$' [name='schema-json'] has a route that contains '(?P<', begins with a '^', or ends with a '$'. This was likely an oversight when migrating to django.urls.path().
08:07:34 RQ worker 'rq:worker:87fb3c33e4e24c258c6c68870440abdc' started, version 1.0

2019-07-31 08:07:34,151 DEBG 'rqworker_default_1' stderr output:
08:07:34 *** Listening on default...

2019-07-31 08:07:34,155 DEBG 'rqworker_default_1' stderr output:
08:07:34 Cleaning registries for queue: default

2019-07-31 08:07:34,232 DEBG 'rqworker_default_0' stderr output:
System check identified some issues:

WARNINGS:
?: (2_0.W001) Your URL pattern 'api/swagger.slug:format$' [name='schema-json'] has a route that contains '(?P<', begins with a '^', or ends with a '$'. This was likely an oversight when migrating to django.urls.path().
08:07:34 RQ worker 'rq:worker:0138a33e38c14dcd9b68ce98a8a2dbb7' started, version 1.0

2019-07-31 08:07:34,237 DEBG 'rqworker_default_0' stderr output:
08:07:34 *** Listening on default...

2019-07-31 08:07:34,755 DEBG 'runserver' stderr output:
System check identified some issues:

WARNINGS:
?: (2_0.W001) Your URL pattern 'api/swagger.slug:format$' [name='schema-json'] has a route that contains '(?P<', begins with a '^', or ends with a '$'. This was likely an oversight when migrating to django.urls.path().

2019-07-31 08:07:34,756 DEBG 'runserver' stdout output:
Operations to perform:
Apply all migrations: admin, auth, contenttypes, engine, git, sessions
Running migrations:
No migrations to apply.

2019-07-31 08:07:35,699 DEBG 'ssh-agent' stderr output:
debug2: fd 4 setting O_NONBLOCK

2019-07-31 08:07:35,707 DEBG 'ssh-agent' stderr output:
debug1: type 17

2019-07-31 08:07:35,711 DEBG 'ssh-agent' stderr output:
debug1: XXX shrink: 3 < 4

2019-07-31 08:07:35,739 DEBG 'ssh-agent' stderr output:
debug2: fd 4 setting O_NONBLOCK

2019-07-31 08:07:35,740 DEBG 'ssh-agent' stderr output:
debug1: type 11

2019-07-31 08:07:35,741 DEBG 'ssh-agent' stderr output:
debug1: XXX shrink: 3 < 4

2019-07-31 08:07:37,016 DEBG 'runserver' stdout output:

0 static files copied to '/home/django/static', 371 unmodified.

2019-07-31 08:07:37,495 DEBG 'ssh-agent' stderr output:
debug2: fd 4 setting O_NONBLOCK

2019-07-31 08:07:37,503 DEBG 'ssh-agent' stderr output:
debug1: type 17

2019-07-31 08:07:37,506 DEBG 'ssh-agent' stderr output:
debug1: XXX shrink: 3 < 4

2019-07-31 08:07:37,534 DEBG 'ssh-agent' stderr output:
debug2: fd 4 setting O_NONBLOCK

2019-07-31 08:07:37,535 DEBG 'ssh-agent' stderr output:
debug1: type 11

2019-07-31 08:07:37,537 DEBG 'ssh-agent' stderr output:
debug1: XXX shrink: 3 < 4

2019-07-31 08:07:40,010 DEBG 'runserver' stdout output:
Successfully ran command.
Server URL : http://localhost:8080/
Server Root : /tmp/mod_wsgi-localhost:8080:1000
Server Conf : /tmp/mod_wsgi-localhost:8080:1000/httpd.conf
Error Log File : /dev/stderr (INFO)
Request Capacity : 5 (1 process * 5 threads)
Request Timeout : 60 (seconds)
Startup Timeout : 15 (seconds)
Queue Backlog : 100 (connections)
Queue Timeout : 45 (seconds)
Server Capacity : 20 (event/worker), 20 (prefork)
Server Backlog : 500 (connections)
Locale Setting : C.UTF-8

2019-07-31 08:07:40,302 DEBG 'runserver' stderr output:
[Wed Jul 31 08:07:40.300932 2019] [mpm_event:notice] [pid 12:tid 139814913161088] AH00489: Apache/2.4.18 (Ubuntu) mod_wsgi/4.6.2 Python/3.5 configured -- resuming normal operations

2019-07-31 08:07:40,308 DEBG 'runserver' stderr output:
[Wed Jul 31 08:07:40.307976 2019] [mpm_event:info] [pid 12:tid 139814913161088] AH00490: Server built: 2019-04-03T13:34:47

2019-07-31 08:07:40,309 DEBG 'runserver' stderr output:
[Wed Jul 31 08:07:40.308954 2019] [core:notice] [pid 12:tid 139814913161088] AH00094: Command line: 'apache2 (mod_wsgi-express) -f /tmp/mod_wsgi-localhost:8080:1000/httpd.conf -D MOD_WSGI_MPM_ENABLE_EVENT_MODULE -D MOD_WSGI_MPM_EXISTS_EVENT_MODULE -D MOD_WSGI_MPM_EXISTS_WORKER_MODULE -D MOD_WSGI_MPM_EXISTS_PREFORK_MODULE -D FOREGROUND'

2019-07-31 08:07:40,314 DEBG 'runserver' stderr output:
[Wed Jul 31 08:07:40.306349 2019] [wsgi:info] [pid 133:tid 139814913161088] mod_wsgi (pid=133): Starting process 'localhost:8080' with threads=5.

2019-07-31 08:07:40,333 DEBG 'runserver' stderr output:
[Wed Jul 31 08:07:40.332425 2019] [wsgi:info] [pid 133:tid 139814913161088] mod_wsgi (pid=133): Python home /usr.
[Wed Jul 31 08:07:40.332738 2019] [wsgi:info] [pid 133:tid 139814913161088] mod_wsgi (pid=133): Initializing Python.

2019-07-31 08:07:40,510 DEBG 'runserver' stderr output:
[Wed Jul 31 08:07:40.509698 2019] [wsgi:info] [pid 133:tid 139814913161088] mod_wsgi (pid=133): Attach interpreter ''.

2019-07-31 08:07:40,521 DEBG 'runserver' stderr output:
[Wed Jul 31 08:07:40.520806 2019] [wsgi:info] [pid 133:tid 139814913161088] mod_wsgi (pid=133): Imported 'mod_wsgi'.

2019-07-31 08:07:40,521 DEBG 'runserver' stderr output:
[Wed Jul 31 08:07:40.521836 2019] [wsgi:info] [pid 133:tid 139814913161088] mod_wsgi (pid=133, process='localhost:8080', application=''): Loading Python script file '/tmp/mod_wsgi-localhost:8080:1000/handler.wsgi'.

2019-07-31 08:07:41,192 DEBG 'ssh-agent' stderr output:
debug2: fd 4 setting O_NONBLOCK

2019-07-31 08:07:41,198 DEBG 'ssh-agent' stderr output:
debug1: type 17

2019-07-31 08:07:41,202 DEBG 'ssh-agent' stderr output:
debug1: XXX shrink: 3 < 4

2019-07-31 08:07:41,233 DEBG 'ssh-agent' stderr output:
debug2: fd 4 setting O_NONBLOCK

2019-07-31 08:07:41,234 DEBG 'ssh-agent' stderr output:
debug1: type 11

2019-07-31 08:07:41,235 DEBG 'ssh-agent' stderr output:
debug1: XXX shrink: 3 < 4

2019-07-31 08:08:18,442 DEBG 'runserver' stderr output:
[Wed Jul 31 08:08:18.441612 2019] [wsgi:error] [pid 133:tid 139814687557376] [remote 10.0.2.2:49967] [2019-07-31 08:08:18,439] WARNING django.request: Not Found: /favicon.ico

2019-07-31 08:23:18,405 DEBG 'runserver' stderr output:
[Wed Jul 31 08:23:16.576750 2019] [wsgi:error] [pid 134:tid 139814833280768] [client 10.0.2.2:65008] Timeout when reading response headers from daemon process 'localhost:8080': /tmp/mod_wsgi-localhost:8080:1000/htdocs/api, referer: http://localhost:8080/dashboard/

2019-07-31 08:23:21,321 DEBG 'runserver' stderr output:
[Wed Jul 31 08:23:21.318357 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] [2019-07-31 08:23:20,649] ERROR django.request: Internal Server Error: /api/v1/tasks/6

2019-07-31 08:23:21,323 DEBG 'runserver' stderr output:
[Wed Jul 31 08:23:21.322648 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] Traceback (most recent call last):
[Wed Jul 31 08:23:21.322677 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] File "/usr/local/lib/python3.5/dist-packages/django/db/backends/base/base.py", line 240, in _commit
[Wed Jul 31 08:23:21.322700 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] return self.connection.commit()
[Wed Jul 31 08:23:21.322724 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] psycopg2.IntegrityError: update or delete on table "engine_task" violates foreign key constraint "engine_clientfile_task_id_633f63d0_fk_engine_task_id" on table "engine_clientfile"
[Wed Jul 31 08:23:21.322748 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] DETAIL: Key (id)=(6) is still referenced from table "engine_clientfile".
[Wed Jul 31 08:23:21.322771 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099]
[Wed Jul 31 08:23:21.322793 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099]
[Wed Jul 31 08:23:21.322816 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] The above exception was the direct cause of the following exception:
[Wed Jul 31 08:23:21.322839 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099]
[Wed Jul 31 08:23:21.322861 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] Traceback (most recent call last):

2019-07-31 08:23:21,330 DEBG 'runserver' stderr output:
[Wed Jul 31 08:23:21.322884 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] File "/usr/local/lib/python3.5/dist-packages/django/core/handlers/exception.py", line 34, in inner
[Wed Jul 31 08:23:21.324980 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] response = get_response(request)
[Wed Jul 31 08:23:21.325006 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] File "/usr/local/lib/python3.5/dist-packages/django/core/handlers/base.py", line 115, in _get_response
[Wed Jul 31 08:23:21.325030 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] response = self.process_exception_by_middleware(e, request)
[Wed Jul 31 08:23:21.325053 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] File "/usr/local/lib/python3.5/dist-packages/django/core/handlers/base.py", line 113, in _get_response
[Wed Jul 31 08:23:21.325077 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] response = wrapped_callback(request, *callback_args, **callback_kwargs)
[Wed Jul 31 08:23:21.325100 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] File "/usr/local/lib/python3.5/dist-packages/django/views/decorators/csrf.py", line 54, in wrapped_view
[Wed Jul 31 08:23:21.325124 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] return view_func(*args, **kwargs)
[Wed Jul 31 08:23:21.325147 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] File "/usr/local/lib/python3.5/dist-packages/rest_framework/viewsets.py", line 116, in view
[Wed Jul 31 08:23:21.325170 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] return self.dispatch(request, *args, **kwargs)
[Wed Jul 31 08:23:21.325193 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] File "/usr/local/lib/python3.5/dist-packages/rest_framework/views.py", line 495, in dispatch
[Wed Jul 31 08:23:21.325217 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] response = self.handle_exception(exc)
[Wed Jul 31 08:23:21.325240 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] File "/usr/local/lib/python3.5/dist-packages/rest_framework/views.py", line 455, in handle_exception
[Wed Jul 31 08:23:21.325263 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] self.raise_uncaught_exception(exc)
[Wed Jul 31 08:23:21.325286 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] File "/usr/local/lib/python3.5/dist-packages/rest_framework/views.py", line 492, in dispatch
[Wed Jul 31 08:23:21.325309 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] response = handler(request, *args, **kwargs)
[Wed Jul 31 08:23:21.325332 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] File "/usr/local/lib/python3.5/dist-packages/rest_framework/mixins.py", line 93, in destroy
[Wed Jul 31 08:23:21.325355 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] self.perform_destroy(instance)
[Wed Jul 31 08:23:21.325377 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] File "/home/django/cvat/apps/engine/views.py", line 196, in perform_destroy
[Wed Jul 31 08:23:21.325400 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] super().perform_destroy(instance)
[Wed Jul 31 08:23:21.325424 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] File "/usr/local/lib/python3.5/dist-packages/rest_framework/mixins.py", line 97, in perform_destroy
[Wed Jul 31 08:23:21.325448 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] instance.delete()
[Wed Jul 31 08:23:21.325471 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] File "/usr/local/lib/python3.5/dist-packages/django/db/models/base.py", line 919, in delete
[Wed Jul 31 08:23:21.325494 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] return collector.delete()
[Wed Jul 31 08:23:21.325519 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] File "/usr/local/lib/python3.5/dist-packages/django/db/models/deletion.py", line 318, in delete
[Wed Jul 31 08:23:21.325542 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] sender=model, instance=obj, using=self.using
[Wed Jul 31 08:23:21.325565 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] File "/usr/local/lib/python3.5/dist-packages/cacheops/transaction.py", line 82, in exit
[Wed Jul 31 08:23:21.325588 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] self._no_monkey.exit(self, exc_type, exc_value, traceback)
[Wed Jul 31 08:23:21.325611 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] File "/usr/local/lib/python3.5/dist-packages/django/db/transaction.py", line 240, in exit
[Wed Jul 31 08:23:21.325635 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] connection.commit()
[Wed Jul 31 08:23:21.325658 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] File "/usr/local/lib/python3.5/dist-packages/django/db/backends/base/base.py", line 262, in commit
[Wed Jul 31 08:23:21.325681 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] self._commit()
[Wed Jul 31 08:23:21.325704 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] File "/usr/local/lib/python3.5/dist-packages/django/db/backends/base/base.py", line 240, in _commit
[Wed Jul 31 08:23:21.325727 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] return self.connection.commit()
[Wed Jul 31 08:23:21.325750 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] File "/usr/local/lib/python3.5/dist-packages/django/db/utils.py", line 89, in exit
[Wed Jul 31 08:23:21.325773 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] raise dj_exc_value.with_traceback(traceback) from exc_value
[Wed Jul 31 08:23:21.325796 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] File "/usr/local/lib/python3.5/dist-packages/django/db/backends/base/base.py", line 240, in _commit
[Wed Jul 31 08:23:21.325819 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] return self.connection.commit()
[Wed Jul 31 08:23:21.325843 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] django.db.utils.IntegrityError: update or delete on table "engine_task" violates foreign key constraint "engine_clientfile_task_id_633f63d0_fk_engine_task_id" on table "engine_clientfile"
[Wed Jul 31 08:23:21.325866 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099] DETAIL: Key (id)=(6) is still referenced from table "engine_clientfile".
[Wed Jul 31 08:23:21.325905 2019] [wsgi:error] [pid 133:tid 139814712735488] [remote 10.0.2.2:65099]

2019-07-31 08:23:34,084 DEBG 'rqworker_default_1' stderr output:
08:23:34 default: cvat.apps.engine.task._create_thread(6, {'client_files': ['frame_0000.jpg', 'frame_0001.jpg', 'frame_0002.jpg', 'frame_0003.jpg', 'frame_0004.jpg', 'frame_0005.jpg', 'frame_0006.jpg', 'frame_0007.jpg', 'frame_0008.jpg', 'frame_0009.jpg', 'frame_0010.jpg', 'frame_0011.jpg', 'frame_0012.jpg', 'frame_0013.jpg', 'frame_0014.jpg', 'frame_0015.jpg', 'frame_0016.jpg', 'frame_0017.jpg', 'frame_0018.jpg', 'frame_0019.jpg', 'frame_0020.jpg', 'frame_0021.jpg', 'frame_0022.jpg', 'frame_0023.jpg', 'frame_0024.jpg', 'frame_0025.jpg', 'frame_0026.jpg', 'frame_0027.jpg', 'frame_0028.jpg', 'frame_0029.jpg', 'frame_0030.jpg', 'frame_0031.jpg', 'frame_0032.jpg', 'frame_0033.jpg', 'frame_0034.jpg', 'frame_0035.jpg', 'frame_0036.jpg', 'frame_0037.jpg', 'frame_0038.jpg', 'frame_0039.jpg', 'frame_0040.jpg', 'frame_0041.jpg', 'frame_0042.jpg', 'frame_0043.jpg', 'frame_0044.jpg', 'frame_0045.jpg', 'frame_0046.jpg', 'frame_0047.jpg', 'frame_0048.jpg', 'frame_0049.jpg', 'frame_0050.jpg', 'frame_0051.jpg', 'frame_0052.jpg', 'frame_0053.jpg', 'frame_0054.jpg', 'frame_0055.jpg', 'frame_0056.jpg', 'frame_0057.jpg', 'frame_0058.jpg', 'frame_0059.jpg', 'frame_0060.jpg', 'frame_0061.jpg', 'frame_0062.jpg', 'frame_0063.jpg', 'frame_0064.jpg', 'frame_0065.jpg', 'frame_0066.jpg', 'frame_0067.jpg', 'frame_0068.jpg', 'frame_0069.jpg', 'frame_0070.jpg', 'frame_0071.jpg', 'frame_0072.jpg', 'frame_0073.jpg', 'frame_0074.jpg', 'frame_0075.jpg', 'frame_0076.jpg', 'frame_0077.jpg', 'frame_0078.jpg', 'frame_0079.jpg', 'frame_0080.jpg', 'frame_0081.jpg', 'frame_0082.jpg', 'frame_0083.jpg', 'frame_0084.jpg', 'frame_0085.jpg', 'frame_0086.jpg', 'frame_0087.jpg', 'frame_0088.jpg', 'frame_0089.jpg', 'frame_0090.jpg', 'frame_0091.jpg', 'frame_0092.jpg', 'frame_0093.jpg', 'frame_0094.jpg', 'frame_0095.jpg', 'frame_0096.jpg', 'frame_0097.jpg', 'frame_0098.jpg', 'frame_0099.jpg', 'frame_0100.jpg', 'frame_0101.jpg', 'frame_0102.jpg', 'frame_0103.jpg', 'frame_0104.jpg', 'frame_0105.jpg', 'frame_0106.jpg', 'frame_0107.jpg', 'frame_0108.jpg', 'frame_0109.jpg', 'frame_0110.jpg', 'frame_0111.jpg', 'frame_0112.jpg', 'frame_0113.jpg', 'frame_0114.jpg', 'frame_0115.jpg', 'frame_0116.jpg', 'frame_0117.jpg', 'frame_0118.jpg', 'frame_0119.jpg', 'frame_0120.jpg', 'frame_0121.jpg', 'frame_0122.jpg', 'frame_0123.jpg', 'frame_0124.jpg', 'frame_0125.jpg', 'frame_0126.jpg', 'frame_0127.jpg', 'frame_0128.jpg', 'frame_0129.jpg', 'frame_0130.jpg', 'frame_0131.jpg', 'frame_0132.jpg', 'frame_0133.jpg', 'frame_0134.jpg', 'frame_0135.jpg', 'frame_0136.jpg', 'frame_0137.jpg', 'frame_0138.jpg', 'frame_0139.jpg', 'frame_0140.jpg', 'frame_0141.jpg', 'frame_0142.jpg', 'frame_0143.jpg', 'frame_0144.jpg', 'frame_0145.jpg', 'frame_0146.jpg', 'frame_0147.jpg', 'frame_0148.jpg', 'frame_0149.jpg', 'frame_0150.jpg', 'frame_0151.jpg', 'frame_0152.jpg', 'frame_0153.jpg', 'frame_0154.jpg', 'frame_0155.jpg', 'frame_0156.jpg', 'frame_0157.jpg', 'frame_0158.jpg', 'frame_0159.jpg', 'frame_0160.jpg', 'frame_0161.jpg', 'frame_0162.jpg', 'frame_0163.jpg', 'frame_0164.jpg', 'frame_0165.jpg', 'frame_0166.jpg', 'frame_0167.jpg', 'frame_0168.jpg', 'frame_0169.jpg', 'frame_0170.jpg', 'frame_0171.jpg', 'frame_0172.jpg', 'frame_0173.jpg', 'frame_0174.jpg', 'frame_0175.jpg', 'frame_0176.jpg', 'frame_0177.jpg', 'frame_0178.jpg', 'frame_0179.jpg', 'frame_0180.jpg', 'frame_0181.jpg', 'frame_0182.jpg', 'frame_0183.jpg', 'frame_0184.jpg', 'frame_0185.jpg', 'frame_0186.jpg', 'frame_0187.jpg', 'frame_0188.jpg', 'frame_0189.jpg', 'frame_0190.jpg', 'frame_0191.jpg', 'frame_0192.jpg', 'frame_0193.jpg', 'frame_0194.jpg', 'frame_0195.jpg', 'frame_0196.jpg', 'frame_0197.jpg', 'frame_0198.jpg', 'frame_0199.jpg', 'frame_0200.jpg', 'frame_0201.jpg', 'frame_0202.jpg', 'frame_0203.jpg', 'frame_0204.jpg', 'frame_0205.jpg', 'frame_0206.jpg', 'frame_0207.jpg', 'frame_0208.jpg', 'frame_0209.jpg', 'frame_0210.jpg', 'frame_0211.jpg', 'frame_0212.jpg', 'frame_0213.jpg', 'frame_0214.jpg', 'frame_0215.jpg', 'frame_0216.jpg', 'frame_0217.jpg', 'frame_0218.jpg', 'frame_0219.jpg', 'frame_0220.jpg', 'frame_0221.jpg', 'frame_0222.jpg', 'frame_0223.jpg', 'frame_0224.jpg', 'frame_0225.jpg', 'frame_0226.jpg', 'frame_0227.jpg', 'frame_0228.jpg', 'frame_0229.jpg', 'frame_0230.jpg', 'frame_0231.jpg', 'frame_0232.jpg', 'frame_0233.jpg', 'frame_0234.jpg', 'frame_0235.jpg', 'frame_0236.jpg', 'frame_0237.jpg', 'frame_0238.jpg', 'frame_0239.jpg', 'frame_0240.jpg', 'frame_0241.jpg', 'frame_0242.jpg', 'frame_0243.jpg', 'frame_0244.jpg', 'frame_0245.jpg', 'frame_0246.jpg', 'frame_0247.jpg', 'frame_0248.jpg', 'frame_0249.jpg', 'frame_0250.jpg', 'frame_0251.jpg', 'frame_0252.jpg', 'frame_0253.jpg', 'frame_0254.jpg', 'frame_0255.jpg', 'frame_0256.jpg', 'frame_0257.jpg', 'frame_0258.jpg', 'frame_0259.jpg', 'frame_0260.jpg', 'frame_0261.jpg', 'frame_0262.jpg', 'frame_0263.jpg', 'frame_0264.jpg', 'frame_0265.jpg', 'frame_0266.jpg', 'frame_0267.jpg', 'frame_0268.jpg', 'frame_0269.jpg', 'frame_0270.jpg', 'frame_0271.jpg', 'frame_0272.jpg', 'frame_0273.jpg', 'frame_0274.jpg', 'frame_0275.jpg', 'frame_0276.jpg', 'frame_0277.jpg', 'frame_0278.jpg', 'frame_0279.jpg', 'frame_0280.jpg', 'frame_0281.jpg', 'frame_0282.jpg', 'frame_0283.jpg', 'frame_0284.jpg', 'frame_0285.jpg', 'frame_0286.jpg', 'frame_0287.jpg', 'frame_0288.jpg', 'frame_0289.jpg', 'frame_0290.jpg', 'frame_0291.jpg', 'frame_0292.jpg', 'frame_0293.jpg', 'frame_0294.jpg', 'frame_0295.jpg', 'frame_0296.jpg', 'frame_0297.jpg', 'frame_0298.jpg', 'frame_0299.jpg', 'frame_0300.jpg', 'frame_0301.jpg', 'frame_0302.jpg', 'frame_0303.jpg', 'frame_0304.jpg', 'frame_0305.jpg', 'frame_0306.jpg', 'frame_0307.jpg', 'frame_0308.jpg', 'frame_0309.jpg', 'frame_0310.jpg', 'frame_0311.jpg', 'frame_0312.jpg', 'frame_0313.jpg', 'frame_0314.jpg', 'frame_0315.jpg', 'frame_0316.jpg', 'frame_0317.jpg', 'frame_0318.jpg', 'frame_0319.jpg', 'frame_0320.jpg', 'frame_0321.jpg', 'frame_0322.jpg', 'frame_0323.jpg', 'frame_0324.jpg', 'frame_0325.jpg', 'frame_0326.jpg', 'frame_0327.jpg', 'frame_0328.jpg', 'frame_0329.jpg', 'frame_0330.jpg', 'frame_0331.jpg', 'frame_0332.jpg', 'frame_0333.jpg', 'frame_0334.jpg', 'frame_0335.jpg', 'frame_0336.jpg', 'frame_0337.jpg', 'frame_0338.jpg', 'frame_0339.jpg', 'frame_0340.jpg', 'frame_0341.jpg', 'frame_0342.jpg', 'frame_0343.jpg', 'frame_0344.jpg', 'frame_0345.jpg', 'frame_0346.jpg', 'frame_0347.jpg', 'frame_0348.jpg', 'frame_0349.jpg', 'frame_0350.jpg', 'frame_0351.jpg', 'frame_0352.jpg', 'frame_0353.jpg', 'frame_0354.jpg', 'frame_0355.jpg', 'frame_0356.jpg', 'frame_0357.jpg', 'frame_0358.jpg', 'frame_0359.jpg', 'frame_0360.jpg', 'frame_0361.jpg', 'frame_0362.jpg', 'frame_0363.jpg', 'frame_0364.jpg', 'frame_0365.jpg', 'frame_0366.jpg', 'frame_0367.jpg', 'frame_0368.jpg', 'frame_0369.jpg', 'frame_0370.jpg', 'frame_0371.jpg', 'frame_0372.jpg', 'frame_0373.jpg', 'frame_0374.jpg', 'frame_0375.jpg', 'frame_0376.jpg', 'frame_0377.jpg', 'frame_0378.jpg', 'frame_0379.jpg', 'frame_0380.jpg', 'frame_0381.jpg', 'frame_0382.jpg', 'frame_0383.jpg', 'frame_0384.jpg', 'frame_0385.jpg', 'frame_0386.jpg', 'frame_0387.jpg', 'frame_0388.jpg', 'frame_0389.jpg', 'frame_0390.jpg', 'frame_0391.jpg', 'frame_0392.jpg', 'frame_0393.jpg', 'frame_0394.jpg', 'frame_0395.jpg', 'frame_0396.jpg', 'frame_0397.jpg', 'frame_0398.jpg', 'frame_0399.jpg', 'frame_0400.jpg', 'frame_0401.jpg', 'frame_0402.jpg', 'frame_0403.jpg', 'frame_0404.jpg', 'frame_0405.jpg', 'frame_0406.jpg', 'frame_0407.jpg', 'frame_0408.jpg', 'frame_0409.jpg', 'frame_0410.jpg', 'frame_0411.jpg', 'frame_0412.jpg', 'frame_0413.jpg', 'frame_0414.jpg', 'frame_0415.jpg', 'frame_0416.jpg', 'frame_0417.jpg', 'frame_0418.jpg', 'frame_0419.jpg', 'frame_0420.jpg', 'frame_0421.jpg', 'frame_0422.jpg', 'frame_0423.jpg', 'frame_0424.jpg', 'frame_0425.jpg', 'frame_0426.jpg', 'frame_0427.jpg', 'frame_0428.jpg', 'frame_0429.jpg', 'frame_0430.jpg', 'frame_0431.jpg', 'frame_0432.jpg', 'frame_0433.jpg', 'frame_0434.jpg', 'frame_0435.jpg', 'frame_0436.jpg', 'frame_0437.jpg', 'frame_0438.jpg', 'frame_0439.jpg', 'frame_0440.jpg', 'frame_0441.jpg', 'frame_0442.jpg', 'frame_0443.jpg', 'frame_0444.jpg', 'frame_0445.jpg', 'frame_0446.jpg', 'frame_0447.jpg', 'frame_0448.jpg', 'frame_0449.jpg', 'frame_0450.jpg', 'frame_0451.jpg', 'frame_0452.jpg', 'frame_0453.jpg', 'frame_0454.jpg', 'frame_0455.jpg', 'frame_0456.jpg', 'frame_0457.jpg', 'frame_0458.jpg', 'frame_0459.jpg', 'frame_0460.jpg', 'frame_0461.jpg', 'frame_0462.jpg', 'frame_0463.jpg', 'frame_0464.jpg', 'frame_0465.jpg', 'frame_0466.jpg', 'frame_0467.jpg', 'frame_0468.jpg', 'frame_0469.jpg', 'frame_0470.jpg', 'frame_0471.jpg', 'frame_0472.jpg', 'frame_0473.jpg', 'frame_0474.jpg', 'frame_0475.jpg', 'frame_0476.jpg', 'frame_0477.jpg', 'frame_0478.jpg', 'frame_0479.jpg', 'frame_0480.jpg', 'frame_0481.jpg', 'frame_0482.jpg', 'frame_0483.jpg', 'frame_0484.jpg', 'frame_0485.jpg', 'frame_0486.jpg', 'frame_0487.jpg', 'frame_0488.jpg', 'frame_0489.jpg', 'frame_0490.jpg', 'frame_0491.jpg', 'frame_0492.jpg', 'frame_0493.jpg', 'frame_0494.jpg', 'frame_0495.jpg', 'frame_0496.jpg', 'frame_0497.jpg', 'frame_0498.jpg', 'frame_0499.jpg', 'frame_0500.jpg', 'frame_0501.jpg', 'frame_0502.jpg', 'frame_0503.jpg', 'frame_0504.jpg', 'frame_0505.jpg', 'frame_0506.jpg', 'frame_0507.jpg', 'frame_0508.jpg', 'frame_0509.jpg', 'frame_0510.jpg', 'frame_0511.jpg', 'frame_0512.jpg', 'frame_0513.jpg', 'frame_0514.jpg', 'frame_0515.jpg', 'frame_0516.jpg', 'frame_0517.jpg', 'frame_0518.jpg', 'frame_0519.jpg', 'frame_0520.jpg', 'frame_0521.jpg', 'frame_0522.jpg', 'frame_0523.jpg', 'frame_0524.jpg', 'frame_0525.jpg', 'frame_0526.jpg', 'frame_0527.jpg', 'frame_0528.jpg', 'frame_0529.jpg', 'frame_0530.jpg', 'frame_0531.jpg', 'frame_0532.jpg', 'frame_0533.jpg', 'frame_0534.jpg', 'frame_0535.jpg', 'frame_0536.jpg', 'frame_0537.jpg', 'frame_0538.jpg', 'frame_0539.jpg', 'frame_0540.jpg', 'frame_0541.jpg', 'frame_0542.jpg', 'frame_0543.jpg', 'frame_0544.jpg', 'frame_0545.jpg', 'frame_0546.jpg', 'frame_0547.jpg', 'frame_0548.jpg', 'frame_0549.jpg', 'frame_0550.jpg', 'frame_0551.jpg', 'frame_0552.jpg', 'frame_0553.jpg', 'frame_0554.jpg', 'frame_0555.jpg', 'frame_0556.jpg', 'frame_0557.jpg', 'frame_0558.jpg', 'frame_0559.jpg', 'frame_0560.jpg', 'frame_0561.jpg', 'frame_0562.jpg', 'frame_0563.jpg', 'frame_0564.jpg', 'frame_0565.jpg', 'frame_0566.jpg', 'frame_0567.jpg', 'frame_0568.jpg', 'frame_0569.jpg', 'frame_0570.jpg', 'frame_0571.jpg', 'frame_0572.jpg', 'frame_0573.jpg', 'frame_0574.jpg', 'frame_0575.jpg', 'frame_0576.jpg', 'frame_0577.jpg', 'frame_0578.jpg', 'frame_0579.jpg', 'frame_0580.jpg', 'frame_0581.jpg', 'frame_0582.jpg', 'frame_0583.jpg', 'frame_0584.jpg', 'frame_0585.jpg', 'frame_0586.jpg', 'frame_0587.jpg', 'frame_0588.jpg', 'frame_0589.jpg', 'frame_0590.jpg', 'frame_0591.jpg', 'frame_0592.jpg', 'frame_0593.jpg', 'frame_0594.jpg', 'frame_0595.jpg', 'frame_0596.jpg', 'frame_0597.jpg', 'frame_0598.jpg', 'frame_0599.jpg', 'frame_0600.jpg', 'frame_0601.jpg'], 'server_files': [], 'remote_files': []}) (/api/v1/tasks/6)
2019-07-31 08:23:34,163 DEBG 'rqworker_default_1' stderr output:

2019-07-31 08:23:34,353 DEBG 'rqworker_default_1' stderr output:
[2019-07-31 08:23:34,348] INFO cvat.server: create task #6

dp91628@DP91628 MINGW64 ~/cvat (develop)
$

[olgatias]

@bsekachev
When pressing on Submit again, I get Error Code 504.
Attached print screen and log.

error_504.txt

[bsekachev]

@olgatias
Have you ever changed source code?
You can't create any task, can you?
Can you create a small task (from one or two images, for example)?
What is an output of the command docker exec -it cvat bash -ic 'python3 manage.py showmigrations'?

[olgatias]

@bsekachev
I did not change the source code.

The same task (602 images) - when I'm being stubborn with Submit button, it succeeds sometimes to create the task.
My intuition is that maybe this PC is too slow and doesn't have enough memory for the task (Core 2 Duo E8400 with RAM 4 GB).

Creating smaller tasks - works perfectly (20 images, 100 images, 200 images, ...).

running the command (@ Error Code 504):
winpty docker exec -it cvat bash -ic 'python3 manage.py showmigrations'

the output:

dp91628@DP91628 MINGW64 ~/cvat (develop)
$ winpty docker exec -it cvat bash -ic 'python3 manage.py showmigrations'
System check identified some issues:

WARNINGS:
?: (2_0.W001) Your URL pattern 'api/swagger.slug:format$' [name='schema-json']
has a route that contains '(?P<', begins with a '^', or ends with a '$'. This w
as likely an oversight when migrating to django.urls.path().
admin
[X] 0001_initial
[X] 0002_logentry_remove_auto_add
[X] 0003_logentry_add_action_flag_choices
auth
[X] 0001_initial
[X] 0002_alter_permission_name_max_length
[X] 0003_alter_user_email_max_length
[X] 0004_alter_user_username_opts
[X] 0005_alter_user_last_login_null
[X] 0006_require_contenttypes_0002
[X] 0007_alter_validators_add_error_messages
[X] 0008_alter_user_username_max_length
[X] 0009_alter_user_last_name_max_length
[X] 0010_alter_group_name_max_length
[X] 0011_update_proxy_permissions
authentication
(no migrations)
contenttypes
[X] 0001_initial
[X] 0002_remove_content_type_name
dashboard
(no migrations)
documentation
(no migrations)
engine
[X] 0001_release_v0_1_0
[X] 0002_labeledpoints_labeledpointsattributeval_labeledpolygon_labeledpolygona
ttributeval_labeledpolyline_la
[X] 0003_objectpath_shapes
[X] 0004_task_z_order
[X] 0005_auto_20180609_1512
[X] 0006_auto_20180629_1501
[X] 0007_task_flipped
[X] 0008_auto_20180917_1424
[X] 0009_auto_20180917_1424
[X] 0010_auto_20181011_1517
[X] 0011_add_task_source_and_safecharfield
[X] 0012_auto_20181025_1618
[X] 0013_auth_no_default_permissions
[X] 0014_job_max_shape_id
[X] 0015_db_redesign_20190217
[X] 0016_attribute_spec_20190217
[X] 0017_db_redesign_20190221
[X] 0018_jobcommit
[X] 0019_frame_selection
[X] 0020_remove_task_flipped
git
[X] 0001_initial
[X] 0002_auto_20190123_1305
[X] 0003_gitdata_lfs
sessions
[X] 0001_initial

[bsekachev]

@olgatias
I didn't use docker toolbox on windows 7, but probably a virtual machine with a docker there has less than 4GB RAM. And yes, it can be a reason (especially if a task is created successfully sometimes)

[nmanovic]

@olgatias , Please increase memory of your VM and see if the problem still exists. For now I'm going to close the issue. Don't hesitate to re-open it if you see that CVAT hardware requirements aren't adequate.