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kotlinlang

How do I "enable multiplatform projects explicitly"?
I get the error message "Kotlin: The feature "multi platform projects" is experimental and should be enabled explicitly" on every expected/actual declaration in my project.
The project works perfectly fine on my other computer, where I created the project with the IntelliJ wizard. On my new computer I get this error message when I build in IntelliJ, however gradle over CLI builds without errors

Ensure that IntelliJ delegates build/run actions to gradle on your new computer.