Hello, I’m new to UE, I just created an empty project, added a cube and wanted to save it, but I constantly see an error

2 projects not running. How to solve it?
You most likely have another copy of unreal running. Not always obvious but open Task Manager on Windows and see if there are 2 UE editors. Close one of those and then you can save.
I logged in many times, launched but there are no 2 editors
Did you ever find a fix? If I open another project, I don’t get this error, so it’s somehow part of this particular project.
Thank you!
This was my problem.
I highly second recommending opening Task Manager if you don’t see any additional editors
Wow. This was it for me. Future self; next time don’t leave a project open overnight and forget about it
Nope, running into this with exactly one instance of Unreal Editor running.