[CRITICAL] Session not fully loading and project crashing on other devices

When I launch a session on my project, it either loads up the game to the Creative Hub, displaying ‘Processing’ on the top left, and stays in that state. Alternatively, it sometimes goes to the Fortnite ‘Connecting’ page and becomes stuck there. When I attempt to open this project from another device using the latest version of the project, UEFN crashes on that device, showing the error message:

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
kernel32
ntdll

At times, if I allow the game to load for an extended period, it eventually displays an ‘ERROR’ message in the Creative Hub, with the following log:

NOTE: Other projects boot up and load session fine, and other projects load up withing crashing on the second device. I was also used to longer loading times as this project is quite big, however now it will not even load me into the game.

@Grandma_Bertha 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
For more information, such as how to get the reference ID, please check out the article here: https://create.fortnite.com/news/using-the-creative-and-uefn-bug-reporting-form