Datasette desktop hangs on loading

[tf13]

I'm not sure if I broke something by updating some python libraries, or if something else is wrong, but I can't get Datasette desktop to load fully.

It hangs on the Loading... window, with the spinner going, and the below in the traceback window. If I just close the window manually, I get the custom menus (File > Open CSV... for example); the File menu items load the proper open-file dialog, but selecting an .sqlite or .csv file (as appropriate) does nothing.

Any suggestions for what I might have done to break the app, or how I can troubleshoot?

I've tried deleting the app, re-downloading and reinstalling. I'm running Catalina (10.15.7) on a MacBook Pro (13-inch, 2020, Four Thunderbolt 3 ports).

Here's the what's in the loading window when it hangs:

bin/python3.9 --version
Python 3.9.6
Took 124ms
bin/python3.9 --version
Python 3.9.6
Took 39ms
bin/pip install datasette>=0.59a2 datasette-app-support>=0.11.5 datasette-vega>=0.6.2 datasette-cluster-map>=0.17.1 datasette-pretty-json>=0.2.1 datasette-edit-schema>=0.4 datasette-configure-fts>=1.1 datasette-leaflet>=0.2.2 --disable-pip-version-check
Requirement already satisfied: datasette>=0.59a2 in lib/python3.9/site-packages (0.59a2)
Requirement already satisfied: datasette-app-support>=0.11.5 in lib/python3.9/site-packages (0.11.5)
Requirement already satisfied: datasette-vega>=0.6.2 in lib/python3.9/site-packages (0.6.2)
Requirement already satisfied: datasette-cluster-map>=0.17.1 in lib/python3.9/site-packages (0.17.1)
Requirement already satisfied: datasette-pretty-json>=0.2.1 in lib/python3.9/site-packages (0.2.1)
Requirement already satisfied: datasette-edit-schema>=0.4 in lib/python3.9/site-packages (0.4)
Requirement already satisfied: datasette-configure-fts>=1.1 in lib/python3.9/site-packages (1.1)
Requirement already satisfied: datasette-leaflet>=0.2.2 in lib/python3.9/site-packages (0.2.2)
Requirement already satisfied: click<8.1.0,>=7.1.1 in lib/python3.9/site-packages (from datasette>=0.59a2) (8.0.1)
Requirement already satisfied: itsdangerous<3.0,>=1.1 in lib/python3.9/site-packages (from datasette>=0.59a2) (2.0.1)
Requirement already satisfied: hupper~=1.9 in lib/python3.9/site-packages (from datasette>=0.59a2) (1.10.3)
Requirement already satisfied: janus<0.7,>=0.4 in lib/python3.9/site-packages (from datasette>=0.59a2) (0.6.1)
Requirement already satisfied: asgi-csrf>=0.9 in lib/python3.9/site-packages (from datasette>=0.59a2) (0.9)
Requirement already satisfied: uvicorn~=0.11 in lib/python3.9/site-packages (from datasette>=0.59a2) (0.15.0)
Requirement already satisfied: aiofiles<0.8,>=0.4 in lib/python3.9/site-packages (from datasette>=0.59a2) (0.7.0)
Requirement already satisfied: pluggy~=0.13.0 in lib/python3.9/site-packages (from datasette>=0.59a2) (0.13.1)
Requirement already satisfied: PyYAML~=5.3 in lib/python3.9/site-packages (from datasette>=0.59a2) (5.4.1)
Requirement already satisfied: mergedeep<1.4.0,>=1.1.1 in lib/python3.9/site-packages (from datasette>=0.59a2) (1.3.4)
Requirement already satisfied: asgiref<3.5.0,>=3.2.10 in lib/python3.9/site-packages (from datasette>=0.59a2) (3.4.1)
Requirement already satisfied: python-baseconv==1.2.2 in lib/python3.9/site-packages (from datasette>=0.59a2) (1.2.2)
Requirement already satisfied: pint~=0.9 in lib/python3.9/site-packages (from datasette>=0.59a2) (0.17)
Requirement already satisfied: click-default-group~=1.2.2 in lib/python3.9/site-packages (from datasette>=0.59a2) (1.2.2)
Requirement already satisfied: httpx>=0.17 in lib/python3.9/site-packages (from datasette>=0.59a2) (0.19.0)
Requirement already satisfied: Jinja2<3.1.0,>=2.10.3 in lib/python3.9/site-packages (from datasette>=0.59a2) (3.0.1)
Requirement already satisfied: sqlite-utils in lib/python3.9/site-packages (from datasette-app-support>=0.11.5) (3.17.1)
Requirement already satisfied: packaging in lib/python3.9/site-packages (from datasette-app-support>=0.11.5) (21.0)
Requirement already satisfied: python-multipart in lib/python3.9/site-packages (from asgi-csrf>=0.9->datasette>=0.59a2) (0.0.5)
Requirement already satisfied: charset-normalizer in lib/python3.9/site-packages (from httpx>=0.17->datasette>=0.59a2) (2.0.6)
Requirement already satisfied: certifi in lib/python3.9/site-packages (from httpx>=0.17->datasette>=0.59a2) (2021.5.30)
Requirement already satisfied: httpcore<0.14.0,>=0.13.3 in lib/python3.9/site-packages (from httpx>=0.17->datasette>=0.59a2) (0.13.7)
Requirement already satisfied: rfc3986[idna2008]<2,>=1.3 in lib/python3.9/site-packages (from httpx>=0.17->datasette>=0.59a2) (1.5.0)
Requirement already satisfied: sniffio in lib/python3.9/site-packages (from httpx>=0.17->datasette>=0.59a2) (1.2.0)
Requirement already satisfied: anyio==3.* in lib/python3.9/site-packages (from httpcore<0.14.0,>=0.13.3->httpx>=0.17->datasette>=0.59a2) (3.3.1)
Requirement already satisfied: h11<0.13,>=0.11 in lib/python3.9/site-packages (from httpcore<0.14.0,>=0.13.3->httpx>=0.17->datasette>=0.59a2) (0.12.0)
Requirement already satisfied: idna>=2.8 in lib/python3.9/site-packages (from anyio==3.*->httpcore<0.14.0,>=0.13.3->httpx>=0.17->datasette>=0.59a2) (3.2)
Requirement already satisfied: MarkupSafe>=2.0 in lib/python3.9/site-packages (from Jinja2<3.1.0,>=2.10.3->datasette>=0.59a2) (2.0.1)
Requirement already satisfied: sqlite-fts4 in lib/python3.9/site-packages (from sqlite-utils->datasette-app-support>=0.11.5) (1.0.1)
Requirement already satisfied: tabulate in lib/python3.9/site-packages (from sqlite-utils->datasette-app-support>=0.11.5) (0.8.9)
Requirement already satisfied: dateutils in lib/python3.9/site-packages (from sqlite-utils->datasette-app-support>=0.11.5) (0.6.12)
Requirement already satisfied: pytz in lib/python3.9/site-packages (from dateutils->sqlite-utils->datasette-app-support>=0.11.5) (2021.1)
Requirement already satisfied: python-dateutil in lib/python3.9/site-packages (from dateutils->sqlite-utils->datasette-app-support>=0.11.5) (2.8.2)
Requirement already satisfied: pyparsing>=2.0.2 in lib/python3.9/site-packages (from packaging->datasette-app-support>=0.11.5) (2.4.7)
Requirement already satisfied: six>=1.5 in lib/python3.9/site-packages (from python-dateutil->dateutils->sqlite-utils->datasette-app-support>=0.11.5) (1.16.0)
Took 1288ms

[spod]

I also hit this issue.

As a work around disconnecting my network, launching the app and then reconnecting to network works for now.

Given some pointers I’m happy to try debug this further, but I would appreciate some pointers. A quick ktrace of datasette processes and poking around in chrome dev tools within the app window showing the spinner and logs showed no obvious issues or errors.

[spod]

This is also discussed in issue #139

Once I had datasette.app started with my workaround I used the debug menu to view server logs and spotted an issue.

simonw/datasette-app-support#20 is a proposed fix for the issue I encountered.

[tf13]

Thanks, @spod — I'm pretty new to git; where do I find the file to make that change? (It looks like you just replaced < version.parse(plugin["tag_name"]) with < version.parse(plugin.get("tag_name", "")) — but I can't find where. Thanks!

[spod]

@tf13 I edited ~/.datasette-app/venv/lib/python3.9/site-packages/datasette_app_support/__init__.py to change line 44 from version.parse(plugin["tag_name"]) to version.parse(plugin.get("tag_name", "")).

I think it should be fine to edit the file in place as long as you make sure to preserve the line indentation (python is while space sensitive).
When a new version of datasette_app_support is released your local change should get over written with the new version.

[tf13]

This worked — thanks! (At first it didn't, but that's because I left the < off the beginning of the revised line.) I just commented out the original when I added the revised line.

[RoelofSpijker]

The workarounds do prevent the error on line 44 for me, but the problem persists. It's still stuck at the loading screen. No further errors in terminal. This is on mac OS 12.3.1.