https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=26893 --- Comment #6 from Jonathan Druart <jonathan.druart@bugs.koha-community.org> --- Looks like we cannot force the version: % apt install libjson-validator-perl=3.25+dfsg-1+koha3 Error while loading /etc/koha/sites/kohadev/plack.psgi: Can't load application from file "/kohadevbox/koha/api/v1/app.pl": Can't locate JSON/Validator/Util.pm in @INC (you may need to install the JSON::Validator::Util module) (@INC contains: /kohadevbox/koha /kohadevbox/koha/installer /kohadevbox/koha/lib/installer /etc/perl /usr/local/lib/x86_64-linux-gnu/perl/5.30.3 /usr/local/share/perl/5.30.3 /usr/lib/x86_64-linux-gnu/perl5/5.30 /usr/share/perl5 /usr/lib/x86_64-linux-gnu/perl-base /usr/lib/x86_64-linux-gnu/perl/5.30 /usr/share/perl/5.30 /usr/local/lib/site_perl /var/lib/koha/kohadev/plugins) at /usr/local/share/perl/5.30.3/JSON/Validator/OpenAPI/Mojolicious.pm line 5. Of course new versions of Mojolicious need the new JSON::Validator -- You are receiving this mail because: You are the assignee for the bug. You are watching all bug changes.