Unreal engine OpenLevel Blueprint TravelFailure

Hello, I’m using Unreal Engine 5.0.3
I’m using Windows 11 and the cheap laptop

I want to make a start menu so I followed this guy : How To Create A Main Menu [Unreal Engine 5] - YouTube
I followed steps by steps but keep getting this error


My level Blueprint:

My widget Blueprint:

What is the problem? Help me pls