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Help! Unreal Engine Crashes while loading a level

I don’t know if it’s the right place to write in this but I am using Unreal Engine 4.25 but when I try to load my sublevel, unreal engine is always crashing, I tried to look for an answer but I didn’t find one. Here is the crash report:

Assertion failed: Outer != nullptr [FileD:/Build/++UE4+Licensee/Sync/Engine/Source/Runtime/CoreUObject/Private/UObject/UObjectHash.cpp] [Line: 777] Getting objects with a null outer is no longer supported. If you want to get all packages you might consider using GetObjectsOfClass instead.

UE4Editor_Core UE4Editor_Core UE4Editor_CoreUObject UE4Editor_Engine UE4Editor_WorldBrowser UE4Editor_WorldBrowser UE4Editor_WorldBrowser UE4Editor_Slate UE4Editor_Slate UE4Editor_Slate UE4Editor_Slate UE4Editor_Slate UE4Editor_Slate UE4Editor_Slate UE4Editor_Slate UE4Editor_Slate UE4Editor_Slate UE4Editor_Slate UE4Editor_ApplicationCore UE4Editor_ApplicationCore UE4Editor_ApplicationCore UE4Editor_ApplicationCore user32 user32 UE4Editor_ApplicationCore UE4Editor UE4Editor UE4Editor UE4Editor UE4Editor kernel32 ntdll

Thanks for your help.