"soft_unicode" is not supported in latest markupsafe about atcoder-tools

[chum0n]

Thank you for sharing your solution! I have solved the problem with the following method: downgrading markupsafe with the pip command.

$ pip list | grep MarkupSafe
MarkupSafe 2.1.0

$ pip install MarkupSafe==2.0.1

$ pip list | grep MarkupSafe
MarkupSafe 2.0.1

[mo124121]

I also encountered this issue during setup of new environment for 2023 judge.

I found that this issue comes from that jinja2 doesn't pin markupsafe version, but it seems that jinja maintainer don't have plan to fix it because jinja 2.11.x is unsupported version.
pallets/jinja#1606

I think that the ideal way to solve this issue is to update dependency of jinja version on atcoder-tools. However, jinja dev. already moved to 3.x and major version up might cause trouble without investigation. Therefore, pinning markupsafe on atcoder-tools is realistic way to solve this issue.