How to solve android studio loading project? Cannot load project: java.lang.IllegalStateException: @NotNull method

Closing IDEA via Task Manager and restart it solved it for me. No Laptop restart or cache deleting needed.

Finally I solved this by following ways

1.Force stop Android studio from Task Manager

2.Clean all cache

3.Restart laptop

Thank you all for the support

Try to restart Android Studio by invalating Cache. Good luck

Go to File ->Invalidate Caches/ Restart