No modules selected. Dart support will be disabled for the project / IntelliJ

Question

I got flutter upgarade and imported a project from git.

and I want to run this app but Dart support is disabled. Flutter SDK path seems apllied but Dart ( on Setting > Languages & Frameworks > Dart seems not be able to be enabled.

How could I solve this situation? enter image description here

Answer 1

Close the project, delete the .idea folder and open it again.