UEFN Crash

I was working on a UE FN project and when i closed the game and went to save it via the editor application, I was met with a blue screen on my computer and it was stuck at 100% the whole night so I just restarted my computer in the morning. Everything was fine however when I try to load into the map that I was working on, I get this error:

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x0000000000000028

UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
kernel32
ntdll

I am also getting this error:

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x0000000400000027

UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
kernel32
ntdll

And now today, I am getting this error:

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION 0x000009ba1edb2800

UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
kernel32
ntdll

Other maps work just fine for me. I already tried to reset my Nvidia graphic settings to default. Is there any other way to restore my map back to an older state or completely resolve this issue.
Thanks.

@PieceControlJame Thank you for your report! We would like to look into this further, would you be able to submit a bug report using the form available here? Fortnite Creative