<@U3E01MVRD> You shouldn't need to add the maven-c...
# tornadofx
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@permalmberg You shouldn't need to add the maven-compiler-plugin if you only have Kotlin code. Try running mvn compile from the command line without it. If that works, it's just a matter of IDEA not picking up the change yet. So you could also just try to remove it now and see if it works without it.