Serial device not added correctly

[baltika_no_9]

I believe I have the same issue as @yvereg. .... I get very similar stuff to yvereg in Signal K - number of sats shows 10, Date/Time is correct and messages are current but Lat/Long is null, as is COG and Mag. var. 

I am using a USB Globslsat BU-353

That is not what yvereg is reporting as a problem as far as I am aware from reading his posts, the screenshots in the thread where lat/long, COG and Mag var are showing as null are mine not his. That's because the USB GPS module is sitting on my desk with no view of the sky.

His problem is that he can't successfully install his GPS so isn't getting any messages in Signal K at all, null or otherwise. The problem is as he reports "no such file or directory cannot open /dev/ttyOP_gnss, not connected" and "no alias created". He can fix that by manually creating a symlink.