Exception error??

[Ashleydoessimsthings]

i'm trying to import a downloaded sim from my downloads and this error keeps popping up 

[Window Title]
Sims 4 Tray Importer

[Main Instruction]
Oops! Something goes wrong...

[Main Description]
Unhandled exception has occurred in your application. If you click Continue, the application will ignore this error and attempt to continue. If you click Quit, the application will close immediately.

Value cannot be null.
Parameter name: path1.

 

never mind, I've fixed the problem, turns out i needed to edit where the file folder destination was