Well, you probably have more errors. 1337 is just the max amount of errors (or warnings) that gets shown.
Don;t know how you got into this mess, but here is something you can try:
– delete Atlas_Core
- rename Atlas_UI_Resources to Atlas_Core and see if it picks up all orphans.
And if all errors are in Atlas_Web_Content, just delete that one. Not sure if this gets you back to 0 errors though
Thank you for the answer.
Problem was still going on.
The main problem is that Atlas_UI_Ressources was not included when starting from Blank Template.
I solved it by using the Academy Template at start, it includes the Atlas_UI_Ressources. It appears to be a small mistake in the crash course because it is asked to take the Blank Template (probably the course is a few years old and not up-to-date).