Need help with SAF handling documents

MIT App Inventor Help
1

I am trying to use FilePicker to copy the selected file from the phones storage to ASD and ran into a few problems that I can't seem to resolve.

  1. When clicking the first button, I wanted to change the old file name to the new one but the "call SAF.RenameDocument" is giving me the error "Error from Companion: authority" and I dont know how to resolve it.
    SAF PDFs
    SAF PDFs1303×620 120 KB
  2. When opening the app I get error 908: The permission 1 has been denied.
  3. When clicking the second button to open the document I get the error 2101, basically saying that the file could not be found, so I believe that the FilePicker is not working properly

The extensions I am using are:
SAF by @vknow360
GetASD by @Anke

2

Read the SAF extension documentation first and all relevant posts in this thread.
And then come back if there are still problems...