"windows setup encountered an internal error while loading or searching for an unattend answer file"

[callmemikhail]

If you encounter a similar error, it can be resolved in one of the following ways:

Case 1:
Rename the file to notautounattend.xml and use the command:
setup.exe /Unattend:D:\notautounattend.xml

Case 2:
Change this line:

cmd.exe /c ">>"X:\disable-defender.vbs" echo WScript.Echo "Scanning for newly created SYSTEM registry hive file to disable Windows Defender services...""

To this:

cmd.exe /c ">>X:\disable-defender.vbs echo WScript.Echo 'Scanning for newly created SYSTEM registry hive file to disable Windows Defender services...'"

It was helpful for me