Spent all night trying to figure out why my USB camera wasn’t displaying. On a fresh MainsailOS install from raspberry pi flasher I reviewed the logs and found crowsnest had various errors. I reviewed logs and found various crowsnest errors, particularly pointing to the install failing.
I executed the install script for crowsnest manually and everything went back to up and running normally.
Pi3 b+
MainsailOS 64 bit from raspberry pi flasher.