When connecting my AVX to the pi I get the following error:
2021-08-24T22:26:15: [ERROR] Failed to connect to port (/dev/ttyUSB0). Error: Port failure Error: No such file or directory. Check if device is connected to this port.
Checked and it's using nexstarusb driver. Checked cable with windows and it's working. Moved the AVX to another USB on the pi. Rebooted appropriately.
I ran into this with my 5se but can't remember what I did to remedy it.
After reading the wiki I ran the following:
apt update && sudo apt upgrade && sudo apt dist-upgrade
And it works.