Everything worked fine till few hours ago then the build started failing. We don't have modified any configuration in the conf.py file and just added text and images to a page of the manual.
The errors are:
ImportError: cannot import name 'contextfunction' from 'jinja2' (/home/docs/checkouts/readthedocs.org/user_builds/manuale-catasto-strade/envs/novara/lib/python3.7/site-packages/jinja2/__init__.py)
Could not import extension sphinx.builders.latex (exception: cannot import name 'contextfunction' from 'jinja2' (/home/docs/checkouts/readthedocs.org/user_builds/manuale-catasto-strade/envs/novara/lib/python3.7/site-packages/jinja2/__init__.py))
Details
Actual Result
Everything worked fine till few hours ago then the build started failing. We don't have modified any configuration in the conf.py file and just added text and images to a page of the manual.
We get the same errors in another manual: