UE5 build fails

Hi guys, I am trying to build my project (UE5.0.3) and I can play in editor without any issue but when i press build all or build geometry i get this:

Assertion failed: Actor->Brush->RootOutside [File:D:\build++UE5\Sync\Engine\Source\Developer\BSPUtils\Private\BSPOps.cpp] [Line: 527]

UnrealEditor_BSPUtils
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_LevelEditor
UnrealEditor_LevelEditor
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_ApplicationCore
UnrealEditor_ApplicationCore
UnrealEditor_ApplicationCore
UnrealEditor_ApplicationCore
user32
user32
UnrealEditor_ApplicationCore
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
kernel32
ntdll

What does it even mean?

Hey there @kendoll30! Welcome to the community! Looks like something from the BSP tools is failing. Do you have any meshes you generated with the mesh tools? I know the base maps use them for the starter floors, but they shouldn’t be failing to generate.

It’s failing to assert that the object has the bool RootOutside checked. This stems from model.h it seems. I hadn’t seen these checks fail before.