Catkin_ws/src/ doesn't exist

I can’t see the src file.

Hello @happyjuliet3,

This is really strange. I would say the best you can do in this case is to close the course and reopen it to see if it fixes the issue (you can force this, for instance, by changing to a different course and then coming back to this one). So, if this is still happening when you open it again, please let me know. It should work properly though.