FTBFS copr-messaging (fedora-rawhide)

[praiskup]

adding license file 'LICENSE'
writing manifest file 'copr_messaging.egg-info/SOURCES.txt'
+ PYTHONPATH=/builddir/build/BUILD/copr-messaging-1.0-build/copr-messaging-git-51.526473b
+ sphinx-build-3 docs html
Running Sphinx v8.1.3
Please install the readthedocs theme with:
dnf install python*-sphinx_rtd_theme
loading translations [en]... WARNING: Invalid configuration value found: 'language = None'. Update your configuration to a valid language code. Falling back to 'en' (English).
done
making output directory... done
Converting `source_suffix = '.rst'` to `source_suffix = {'.rst': 'restructuredtext'}`.
ERROR: Invalid value `None` in intersphinx_mapping['https://docs.python.org/']. Expected a two-element tuple or list.

Configuration error:
Invalid `intersphinx_mapping` configuration (1 error).

RPM build errors:
error: Bad exit status from /var/tmp/rpm-tmp.3Lz8fg (%build)
    Bad exit status from /var/tmp/rpm-tmp.3Lz8fg (%build)
Finish: rpmbuild copr-messaging-1.0-1.20250120070530567013.main.39.gfde1bd2e4.fc42.src.rpm
Finish: build phase for copr-messaging-1.0-1.20250120070530567013.main.39.gfde1bd2e4.fc42.src.rpm