UE5 [Light Build] Freeze at 100% when i add a light to the scene

Please help it is so frustrating i searched for days…

[Light Build] Freeze at 100% when i add a light to the scene
No Error just freeze

when i remove the light it builds it without any problems

the sunlight (default scene) doesnt make any problems

I relatively new to unreal especially 5: What i dont understand Why do you have to build lights. I thought lumen does it on the fly anyway?

when i set the lights from static to movable it works!