Crash project UE 5.2

Hi everyone. I need help with this crash:

Fatal error: [File:D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\UnrealEngine.cpp] [Line: 2837] Failed to load special material ‘DefaultHLODFlattenMaterialName’ from path ‘’

I deleted UE5 and installed it again, deleted the content folder, materials, and all project folders, but it still doesn’t work.

The last thing I did was create a map in the level, add materials, and paint the ground. Before this, when I started the project, it crashed.

My brain is broken, I really need help, I’m sad :frowning: