https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=37361 --- Comment #7 from Andreas Tomiak <tomiak@helmholtz-berlin.de> --- Some more information: dpkg-query --list | grep libjson-validator-perl ii libjson-validator-perl 5.99+really5.14-koha2 all module to validate data against a JSON schema The links are correct: xxx@yyy:/usr/share/perl5/JSON/Validator/cache$ ls -la ../../../../openapi-specification/schemas/v2.0/schema.json -rw-r--r-- 1 root root 40247 Feb 16 2021 ../../../../openapi-specification/schemas/v2.0/schema.json xxx@yyy:/usr/share/perl5/JSON/Validator/cache$ ls -la ../../../../openapi-specification/schemas/v3.0/schema.json -rw-r--r-- 1 root root 35456 Feb 16 2021 ../../../../openapi-specification/schemas/v3.0/schema.json Our installation sources: cat /etc/apt/sources.list.d/koha.list deb [signed-by=/usr/share/keyrings/koha-keyring.gpg] http://debian.koha-community.org/koha stable main bullseye I´ve changed rights on /etc/apt/sources.list.d/koha.list and /etc/apt/apt.conf.d/ from 600 to 644 now. Wrong umask setting due to a weird security theatre here :-( -- You are receiving this mail because: You are the assignee for the bug. You are watching all bug changes.