connect to NAS

I’m trying to connect my volumio to a NAS via volumios user interface. Up to now without success.
Does someone see the problem in the following log?

Version is 2.201

Jul 02 23:02:24 volumio volumio[916]: info: CoreCommandRouter::executeOnPlugin: networkfs , addShare
Jul 02 23:02:24 volumio volumio[916]: info: Adding a new share
Jul 02 23:02:24 volumio volumio[916]: info: No correspondence found in configuration for share USB1 on IP INTERNETBOX-NAS
Jul 02 23:02:24 volumio sudo[22147]: volumio : TTY=unknown ; PWD=/ ; USER=root ; COMMAND=/bin/mount -t cifs -o guest,ro,dir_mode=0777,file_mode=0666,iocharset=utf8,noauto //INTERNETBOX-NAS/USB1 /mnt/NAS/USB1
Jul 02 23:02:24 volumio sudo[22147]: pam_unix(sudo:session): session opened for user root by (uid=0)
Jul 02 23:02:24 volumio sudo[22147]: pam_unix(sudo:session): session closed for user root
Jul 02 23:02:25 volumio volumio[916]: info: Error mounting USB1 on IP INTERNETBOX-NAS : exec error Error: Command failed: /usr/bin/sudo /bin/mount -t cifs -o guest,ro,dir_mode=0777,file_mode=0666,iocharset=utf8,noauto ‘//INTERNETBOX-NAS/USB1’ ‘/mnt/NAS/USB1’
Jul 02 23:02:25 volumio volumio[916]: Child process terminated abnormally.

I can’t tell anything from that other than ‘mount’ is failing. Double check your permissions are OK on the NAS as a first step, then try mounting manually with the verbosity flag set to see if you get any extra detail:

sudo mount  -v -t cifs -o guest,ro,dir_mode=0777,file_mode=0666,iocharset=utf8,noauto //INTERNETBOX-NAS/USB1 /mnt/NAS/USB1