BR17 Mic Mac OS 10.13.6 Audacity 2.3.3

I have a BRI17 mic fed into a TU04 mixer connected into a USB port on my MAC.
When starting Audacity it sees the mic and allows me to choose it and it is labeled JieLi BR17. My first recording works, but if I choose a “new file” or delete the track to record a new one then I get the error
-9986 Internal PortAudio Error
and I have to restart Audacity to get another go.

There is no problem with the internal mic. Not good quality. But no problem.

Any suggestions?