Source validator works on local TW machine, but fails on OBS

Hi, I'm having trouble with SR https://build.opensuse.org/request/show/1175051 It claims: Source validator failed. Try "osc service runall source_validator" /usr/lib/obs/service/source_validators/20-files-present-and-referenced: line 98: unzip: command not found zip file bootstrap-4.3.1.zip seems encrypted. This makes source review impossible and hence is forbidden. It works locally: docb@X1E:~/buildservice/home:DocB:Orthanc/orthanc> osc service runall source_validator - package has orthanc-rpmlintrc: (unchanged) docb@X1E:~/buildservice/home:DocB:Orthanc/orthanc> (no error message) and unzip is a build requirement in the spec file. So, everything should be in place. Bug in source_validators? Cheers Axel