External local storage with snap


I installed nextcloud on a snap. (21.01). I want to add an external storage. The configuration in nextcloud gui is not ok, the traffic light is red.
I set the permission on my /media/Daten folder to
sudo chown -R www-data:www-data /media/Daten
sudo chmod -R 0750 /media/Daten

But it doesn’t work.

May everyone can help?

Thank you

Boa tarde,

aqui eu fiz assim,
chmod -R 777 /home/meu-diretiro
chown -R root:www-data /home/meu-diretorio