Hello everyone, is there someone who can help me to fix my problem with Cinematic on UE5-0?

Hello everyone, is there someone who can help me to fix my problem with UE5-22?

I downloaded and installed Unreal Engine 5.0.1 ( UE5-0 ) yesterday. At the beginning the program worked without errors but since yesterday there are strange problems that I can’t fix. I can not open a new open world and I do not understand what the problem is. When I click on File/New Level either nothing happens or it says “this world is not available on this map”. Does anyone know about this problem ? I will be very happy if someone can help me. Thank you very much!

Tags : Cinematic