Steps to reproduce: - Have current master source - Point your browser to the OAI endpoint - Select 'Sets' (or just go to http://localhost:8080/cgi-bin/koha/oai.pl?verb=ListSets) => FAIL: You get this in the logs: Use of uninitialized value $metadata_prefix in join or string at /home/vagrant/kohaclone/Koha/OAI/Server/ResumptionToken.pm line 69.
Still valid.