Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x0000000000000000

Development Getting Started & Setup
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Hi there, I’ve made a game using UEFN and every time I try to launch a session or just upload it to a private version, it starts uploading about 400 MB data and when it reaches exactly at 229 MB the whole UEFN app crashes with this error:

LoginId:278e729d4bdc0c8b9c833cabb6d53d67
EpicAccountId:5e91f95f382a4b1f8f2f468e28aed48a

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x0000000000000000

UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
kernel32
ntdll

I tried verifying the app, reinstalling the whole thing, nothing works.