What is the problem? i have been using octoprint for at least a year and the printer has been off for about a week or two. i turned it on today only to find that i no longer can connect to the printer via serial port /dev/ttyUSB0. i cant get it back to that port by adding it manually either it will only show auto. i get the Error: Failed to autodetect serial port, please set it manually.. am i missing something?
What did you already try to solve it?
Additional information about your setup (OctoPrint version, OctoPi version, printer, firmware,
serial.log or output on terminal tab, ...)