the top line gives the error
LogAutoReimportManager : Warning: Unable to watch directory … / … / …
/FortniteGame/Content/ as it will conflict with another watching … / … / … /FortniteGame/Content/.
the two directory paths
C:\Users\NAME\AppData\Local\FortniteGame
C:\Program Files\Epic Games\Fortnite\FortniteGame
basically, the path
C:\Users\NAME\AppData\Local\FortniteGame
instead of C:\Program Files\Epic Games\Fortnite\FortniteGame
The directory is protected therefore looks like two versions of the Fortnite path are installed on two paths like an early version which would need Administrator rights
you must go into Windows File Explorer and change properties to this to visible. This will then allow the installation to complete installation
When looking at my PC
C:\Users\Owner\AppData\Local\UnrealEditorFortnite\Saved\Logs
the Owner is 6 characters and must be US/UK keycode characters no German Umlauts, or other language
You Need to start the installation by right click Epic Games Launcher icon select Advanced and tick/set Run as Administrator
Go into EPGL and System set automatic update and restart EPGL in Administrator
My PC is Windows Home. DO NOT USE domain-based PC Windows Server etc