https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=17717 --- Comment #38 from Julian Maurice <julian.maurice@biblibre.com> --- I can reproduce a similar error with this command: root@koha-yakkety:~# sudo -u koha1-koha PERL5LIB=. perl -MAuthen::CAS::Client -E 'say "Hi"' Can't locate Authen/CAS/Client.pm: ./Authen/CAS/Client.pm: Permission denied. BEGIN failed--compilation aborted. root@koha-yakkety:~# cd /tmp/ root@koha-yakkety:/tmp# sudo -u koha1-koha PERL5LIB=. perl -MAuthen::CAS::Client -E 'say "Hi"' Hi So, people that can reproduce the problem, could you please paste the output of the following command (at least the @INC part): # As root sudo -u <KOHA_USER> perl -V -- You are receiving this mail because: You are watching all bug changes.