(Need Help) Backporting Marvel's Spider-Man

i am trying to Backport Marvel's Spider-Man i get an error saying check the log.

here's what the log says.

System.ArgumentException: Illegal characters in path.
at System.IO.Path.CheckInvalidPathChars(String path, Boolean checkAdditional)
at System.IO.Path.GetExtension(String path)
at backporting.Form1.ༀ(String )
Format of the image file is unknown or unsupported. (C:\Users\User1\Desktop\SPM.pkg)


Any clue how to fix it if there is a way?