wrong version of markupsafe

[Jesse-Millwood]

I am using this as part of https://github.com/spantaleev/matrix-docker-ansible-deploy.
I configured that ansible setup to use this repository because of the Docker file provided as outlined here: spantaleev/matrix-docker-ansible-deploy#1463 (comment) . I'm using an ARM VPS so I had to configure the ansible setup to do the build as well.

However when running I get this error:

Mar 07 01:29:47 server systemd[1]: Started matrix-registration.
Mar 07 01:29:48 server matrix-registration[631626]: Traceback (most recent call last):
Mar 07 01:29:48 server matrix-registration[631626]:   File "/usr/local/bin/matrix-registration", line 5, in <module>
Mar 07 01:29:48 server matrix-registration[631626]:     from matrix_registration.app import cli
Mar 07 01:29:48 server matrix-registration[631626]:   File "/usr/local/lib/python3.8/site-packages/matrix_registration/__init__.py", line 1, in <module>
Mar 07 01:29:48 server matrix-registration[631626]:     from . import api
Mar 07 01:29:48 server matrix-registration[631626]:   File "/usr/local/lib/python3.8/site-packages/matrix_registration/api.py", line 9, in <module>
Mar 07 01:29:48 server matrix-registration[631626]:     from flask import (
Mar 07 01:29:48 server matrix-registration[631626]:   File "/usr/local/lib/python3.8/site-packages/flask/__init__.py", line 14, in <module>
Mar 07 01:29:48 server matrix-registration[631626]:     from jinja2 import escape
Mar 07 01:29:48 server matrix-registration[631626]:   File "/usr/local/lib/python3.8/site-packages/jinja2/__init__.py", line 12, in <module>
Mar 07 01:29:48 server matrix-registration[631626]:     from .environment import Environment
Mar 07 01:29:48 server matrix-registration[631626]:   File "/usr/local/lib/python3.8/site-packages/jinja2/environment.py", line 25, in <module>
Mar 07 01:29:48 server matrix-registration[631626]:     from .defaults import BLOCK_END_STRING
Mar 07 01:29:48 server matrix-registration[631626]:   File "/usr/local/lib/python3.8/site-packages/jinja2/defaults.py", line 3, in <module>
Mar 07 01:29:48 server matrix-registration[631626]:     from .filters import FILTERS as DEFAULT_FILTERS  # noqa: F401
Mar 07 01:29:48 server matrix-registration[631626]:   File "/usr/local/lib/python3.8/site-packages/jinja2/filters.py", line 13, in <module>
Mar 07 01:29:48 server matrix-registration[631626]:     from markupsafe import soft_unicode
Mar 07 01:29:48 server matrix-registration[631626]: ImportError: cannot import name 'soft_unicode' from 'markupsafe' (/usr/local/lib/python3.8/site-packages/markupsafe/__init__.py)
Mar 07 01:29:48 server systemd[1]: matrix-registration.service: Main process exited, code=exited, status=1/FAILURE
Mar 07 01:29:48 server systemd[1]: matrix-registration.service: Failed with result 'exit-code'.

This is being run in a systemd service with the exec line:

ExecStart=/usr/bin/env docker run --rm --name matrix-registration \
			--log-driver=none \
			--user=997:1002 \
			--cap-drop=ALL \
			--network=matrix \
			--mount type=bind,src=/matrix/matrix-registration/config,dst=/config,ro \
			--mount type=bind,src=/matrix/matrix-registration/data,dst=/data \
			localhost/zeratax/matrix-registration:latest \
			serve

There does seem to be a similar error regarding the markupsafe package here: pallets/markupsafe#284