Unable to load map in editor and Fortnite after new season update

Please select what you are reporting on:

Creative

What Type of Bug are you experiencing?

Matchmaking

Summary

After the recent update to Fortnite I can no longer open a certain project of mine without it crashing the editor at 88% On top of that the same map that had a decent player base just lost it all due to players not being able to even play the map without receiving a matchmaking error in the lobby

Steps to Reproduce

Load the map

Expected Result

You can launch the map in editor/You are put into the map with no issue

Observed Result

When opened in Editor it immediately crashes and when loaded in the Fortnite lobby player/s are given a matchmaking error

Platform(s)

Tested on PC

Island Code

5931-1847-0998

Example of error in game