in File Explorer
C:\Users%USERPROFILE%\AppData\Local\UnrealEditorFortnite
Delete folder Intermediate and Saved
Restart UEFN
Try again as in the documentation
Build all verse code after the update to verse 2
make sure your weak maps have been updated
Enabled During Phase None, Always, Pre-Game Only, Gameplay Only Determines which game phases the device will activate in.
Base Visible During Game On, Off Determines whether the barrier’s base is visible during the game.
from