Hey guys I am working on this PR https://github.com/arrow-kt/arrow/pull/1481 And I detected the Problem why I always get this error:

e: error: Arrow's annotations can only be used on Kotlin classes. Not valid for error.NonExistentClass

In the Debug stacktrace it occurs that the failure happens in

arrow-core-extensions

more specifically, the kapt Task

kaptKotlin

I have 2 assumptions: - Either there is a problem with codegen and I need to make this PR bigger than expected. Moving everything out of arrow-extras-data. - Or I am missing an import in gradle