This error keeps popping up when I try to test map. Out of the blue, one second I can check in game process and the next I have this message. Any work arounds?
Close your project, go to the epic launcher, go to Unreal Engine => Library
find your engine version and pick verify

Something might have been corrupted in the engine modules.
It worked! You are my Hero thanks!
Congrats. Happy further dev’ing.