Hi @francosarubbi,
Firstly, see How to provide good information and, if applicable, [HowTo] post screenshots and links.
Then, to debug, let’s first confirm the drive is, indeed, mounted. Please provide the output of:
mount
Also, you say the drve is mounted, but you never specified if it’s with fstab or systemd units. If it’s with fstab please provide the file. If it’s with systemd units, please provide the relevant unit files.