See https://copr.fedorainfracloud.org/coprs/g/python/python3.8/package/dreampie/ for actual logs. This report is automated and not very verbose, but feel free to ping me for help.
This FTBFS has nothing to do with Python 3.8 because it's caused by errors in the specfile. I think that this bug can be closed as a duplicate of the bug https://bugzilla.redhat.com/show_bug.cgi?id=1603827
*** This bug has been marked as a duplicate of bug 1603827 ***