How do you copy a text file from root directory to ASD?

Good morning I have a problem I have to copy a file from /storage/emulated/0/
to directori of the app
I use this syntax

but I have this mistake
if I install the app I have these errors

You could help me courtesy

You cannot copy a non-media file (like .txt, .pdf, .csv, ...) that is not created by the app itself, from this path to the ASD, even not with SAF.

See also here (especially the overview at the end):