UEFN Crashing when opening a mesh used in a niagara VFX

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Assets

Summary

for a few months im having an issue with a particular vfx or mesh in my map, it works a day and then when I open up my map the next day it is broken, my client crashes when I try to open it, after that everything is fine again. It is very annoying. It happens to all my popular maps.

Steps to Reproduce

None

Expected Result

This does not crash

Observed Result

It crashes
See video https://youtu.be/zOJYBnuVEW0

Platform(s)

PC

Island Code

6369-4500-6726

Additional Notes

Might be related to this but i dont know Niagara VFX do not show at all