If you do not wish to maintain python-urlgrabber in epel9, or do not think you will be able to do this in a timely manner, I would be happy to be a co-maintainer of the package.
FEDORA-EPEL-2021-3f81d5489d has been submitted as an update to Fedora EPEL 9. https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2021-3f81d5489d
FEDORA-EPEL-2021-3f81d5489d has been pushed to the Fedora EPEL 9 stable repository. If problem still persists, please make note of it in this bug report.