gPodder 3.11 updates the database schema.  See [1] for information
about how to rollback to gPodder 3.10 and before.  Note that GPODDER_HOME
on Debian is ~/gPodder.

Thank you for using gPodder!

[1] https://gpodder.github.io/docs/user-manual.html#moving-to-an-older-gpodder-release
