This bug is part of the non-responsive maintainer procedure for pcpa, following https://docs.fedoraproject.org/en-US/fesco/Policy_for_nonresponsive_package_maintainers/. Please respond if you are still active in Fedora and want to maintain python-flask-babel.
This bug appears to have been reported against 'rawhide' during the Fedora 33 development cycle. Changing version to 33.