Bitbucket Server not showing filename and line number in report

Hello,
we got a problem with displaying the file name and line number in the feedback. We use a self-hosted Bitbucket server. How can this be fixed?

Screenshot:

Logs when running under debug (DEBUG=* danger-swift ci):
{
message: 'Function body should span 60 lines or less excluding comments and whitespace: currently spans 145 lines (`function_body_length`)',
file: 'App/AppConfiguration/AppModuleConfigProviderAssembler.swift',
line: 21
},
{
message: 'Function body should span 60 lines or less excluding comments and whitespace: currently spans 77 lines (`function_body_length`)',
file: 'App/AppComponent.swift',
line: 128
},