When I open LightBurn I am getting Bluetooth serial Failure Serial Popup on my macbook. The error fills my entire screen until I force quit the program. I tried re-intalling the software and I am still getting the same error.
In the ‘Laser’ window, immediately to the right of the ‘Devices’ button make sure the correct serial port is selected, and if you continue to have issues please see: Troubleshooting: Serial Port Problems - LightBurn Documentation