Canon MX455 Printer no longer working

Hi, I have recently gone from a windows machine to a Mac (Catalina), my printer (Canon MX455) has been working fine for nearly a month but today it had a little brain fart came up with an error on the printer and now no longer works nor does it appear in the printer settings on the Mac?? I have tried the good old fashioned switching off, leaving it for a few minutes and then switching it back on but still the Mac cannot find it. I have entered the IP of the printer into the settings and still won't print! Can anyone suggest anything else apart from buying a new printer (currently nobody seems to have any instock ready to dispatch anyway). My old printer worked absolutely fab until today :-(