When configuring abcde with CDDBMETHOD=musicbrainz instead of cddb and using abcde version 2.8.1, the
following error might occur:
Can't locate WebService/MusicBrainz/Release.pm in @INC (you may need to install the WebService::MusicBrainz::Release module) (@INC contains: /home/username/perl5/lib/perl5/5.26.1/x86_64-linux-gnu-thread-multi /home/username/perl5/lib/perl5/5.26.1 /home/username/perl5/lib/perl5/x86_64-linux-gnu-thread-multi /home/username/perl5/lib/perl5 /etc/perl /usr/local/lib/x86_64-linux-gnu/perl/5.26.1 /usr/local/share/perl/5.26.1 /usr/lib/x86_64-linux-gnu/perl5/5.26 /usr/share/perl5 /usr/lib/x86_64-linux-gnu/perl/5.26 /usr/share/perl/5.26 /home/username/perl5/lib/perl5/5.26.0 /home/username/perl5/lib/perl5/5.26.0/x86_64-linux-gnu-thread-multi /usr/local/lib/site_perl /usr/lib/x86_64-linux-gnu/perl-base) at /usr/bin/abcde-musicbrainz-tool line 19.
This is related to this fixed bug.
MusicBrainz API changed and is incompatible with previous major version. No matter how many perl packages you install following forum questions and stack** answers, you'll need to upgrade abcde for it to work.
Install a newer version of abcde. At the time of writing this text, 2.9 is out and the latest available from the official downloads.
Just get the latest version tar, extract it and run make install from the extracted folder
(just copying the executable files would suffice, in both cases you might need to sudo).