@Gelo5: sorry but I thought you were referring to the plugin which only shows a dark screen.
@pjorgenunes: I have solved my problem and maybe yours too, in the file
/etc/pam.d/sudo
after the first line:
#%PAM-1.0
add this line of text:
auth sufficient pam_permit.so
Then in the file:
/data/plugins/miscellanea/peppy_screensaver/peppymeter/run_peppymeter.sh
change the line:
python3 volumio_peppymeter.py
into:
sudo -k python3 volumio_peppymeter.py
with my TinkerBoard this solves the problem.