This port will be removed on 2020-12-31 if not fixed
It's optional dependency.
ALL_MODULES option dropped.
A commit references this bug: Author: rene Date: Fri Jan 1 16:43:41 UTC 2021 New revision: 559852 URL: https://svnweb.freebsd.org/changeset/ports/559852 Log: net/freeswitch: drop non-default ALL_MODULES option which uses Python 2.7 PR: 249744 Submitted by: swills Changes: head/net/freeswitch/Makefile head/net/freeswitch/pkg-plist