I cannot get rid of this problem.
The solutions mentioned on the internet are missing the places to be clicked. I cannot find the mark as option
on the right-click context menu.
Most probably your .idea
files are broken, the .iml
file and/or modules.xml
are either missing or corrupted, so all the project files are treated as non-project. Deleting and re-creating .idea
folder should help:
.idea
folder