解决Usage of Kotlin internal declaration from different module

The errindex.php/tags-1038.html" >or Usage of Kotlin internal declaration from different module is actually an Intellij's inspection set with level Error. The code is fine; it's the inspection level that is preventing you from running the code.

To execute your application, you can either lower the severity of the inspection or disable it altogether.

This is where severity level of this inspection can be changed: Settings -> Editor -> Inspections -> Kotlin -> Java interop issues -> usage of Kotlin Internal declarations from Java