So the TrueNAS share is not mounted on your Linux client. Do that first. Refer to the documentation I linked above and/or ask in the user group for your Linux distribution.
You must mount the share on your Linux machine. Which you said you had done but from the output obviously had not.
Also: why do you post an image? You are aware of the concept of copy & paste of text? Images are unreadable for people with visual issues. I asked to post as text. Please do so.
Morning
i’m on au VM so copy/paste text from terminal is not easy, sorry
Question : my server is trunas and the share folder is mnt/partageproxmox/partages. I’m administering from Debian 11, I just want to send the script backup bash command to the sharing folder above. I don’t understand why mount on debian11?