Regenerating a lost printer.cfg file
In some cases an update or hard reset can delete the printer’s printer.cfg, resulting in the error “Unable to open config file /home/hs3/printer_data/config/printer.cfg”
The file can be manually regenerated by navigating the web console to
Machine->config->features.yml->hit “SAVE & GENERATE“.
NOTE Regenerating the printer.cfg file from features.yml will overwrite any custom modification to printer.cfg that the user may have put in.