IntelliJ IDEA showing all maven plugins twice in maven toolbar tree

Question

I have a maven project. Whenever I try to open it in IDEA, all plugins are shown twice in the tree. I have tried restart, invalidate caches / restart, checkout project again

Answer 1

1. Close your project from File menu. File--> close project
2. Go to your project directory and delete .idea and any file with extension .iml
3. Right-click on your pom and open it with IntelliJ or reimport your project from IntelliJ.