Crash Issue After Copying Tilted Towers in UEFN

Summary

Hello, my name is TXS, and I am a Fortnite map creator using Unreal Editor. I’m reaching out for help because ever since I copied the Tilted Towers city from the template into one of my maps, my project crashes during the surface texture preparation. Then, this error appears:

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Assets

Steps to Reproduce

Copy the entire template of tilted towers and paste it into a map.

Expected Result

Tilted is supposed to be in the map.

Observed Result

Once the copying process is complete, the editor will crash every time.

Platform(s)

Pc - Windows

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Additional Notes

By the way, the Tilted template comes from a conversion of a Tilted map from 1.0 to 2.0 in order to copy the landscapes, because in 1.0, landscapes are static meshe.