r564692 introduced a syntax error in the package list along the lines "/listenbrainz.cpython-%%PYTHON_SUFFIX.opt-1.pyc", which causes the build to fail.
A commit references this bug: Author: tcberner Date: Sat Feb 20 13:56:48 UTC 2021 New revision: 566161 URL: https://svnweb.freebsd.org/changeset/ports/566161 Log: audio/rhythmbox: fix plist - Fix bad plist subs PR: 253431 Reported by: Olga Smirnova <mistresssilvara@hotmail.com> Changes: head/audio/rhythmbox/pkg-plist
Committed, thanks.