My projesct just crashes and idk why

How can I fix this error Do you know how I can fix this

Assertion failed: !HasAnyFlags(RF_NeedPostLoad) [File:D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\Materials\MaterialInstance.cpp] [Line: 2444]

UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Landscape
UnrealEditor_Landscape
UnrealEditor_Landscape
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_CoreUObject
UnrealEditor_Engine
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_Core
UnrealEditor_Engine
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
kernel32
ntdll

Every time I open my project it just crashes and gives me that idk why bc all I did was make a new level and that’s it I didn’t mess with code or any BP even tho I have non because all that’s in my project is just cubes was make a world didn’t add code or BP so idk why it’s giving me this I can’t open the project bc of that

This text from crash window is usually useless, open logs from
[YOUR PROJECT DIRECTORY]\Saved\Crashes and see if you can understand prompts there.

Also, do you use github or any other source control solution?

I don’t use git hub

He means files on your computer