Hello , I can not install the printer driver. My printer is a Canon MF211. First I tried to add the printer via Add Printer in the system settings but when I install the driver under the wording of the printer writes cup-missing-filter warning. I tried the following instructions : https://www.blackmoreops.com/2013/11/15/install-configure-printers-linux-cups-foomatic-db/ However, write me the same error. When I try to print a test page I report an error. After diagnosis reports the following error: Page 1 (<troubleshoot.SchedulerNotRunning.SchedulerNotRunning object at 0x7faf46453a20>): {'cups_connection_failure': False} Page 2 (<troubleshoot.ChoosePrinter.ChoosePrinter object at 0x7faf4648cfd0>): {'cups_dest': <cups.Dest Canon_MF210_Series>, 'cups_instance': None, 'cups_queue': 'Canon_MF210_Series', 'cups_queue_listed': True} There is a lot more but i cannot paste it here cuz it tells me the thread is to long ...