Rivo (Volumio Software) mount SMB to NAS always fails

I was wondering what is going on with Volumio. I cannot connect to my Synology NAS (7.x OS) to serve files. The connection always fails and there is a cryptic message referencing a unix command.

Bob

We can’t help without proper information, please post a log and a screenshot where you do a driving mapping, so we have a starting point.

@DED could you please have a look and help?