stm32cubeide error termination of previous launch did not complete successfully There is a problem, after debugging, no any project starts, but only this error window appears!

[YZalo.1]

[MPete.5]

I experienced the same problem. Restarting CUBEIDE fixed it for me. Would be good though to know other ways to kill whatever processes that are still running - and avoid restarting the IDE.

By the way, to me it happened as I tried to kill a build process, in the middle of it.