hi Michael here is some debugging info, section 1.1 https://wiki.koha-community.org/wiki/REST_API_Debug On 4/03/23 12:14 pm, Michael Brown wrote: >>>> Could this possibly be a similar problem? Should I try force-downgrading >>>> JSON::Validator and/or Mojolicious? Is there any debugging I can do of >>>> the Koha::REST::V1 module?