Hp Laserjet 1108, HP Laserjet 1007, HP laserjet pro M1213nf MFP, Canon Pixma 5070, no printers are working after installing Ubuntu 20.04. they all were working in Ubuntu 18.04. it says:
File "/usr/lib/cups/filter/hpcups" not available: No such file or directory.
however terminal says:
hplip is already the newest version (3.20.3+dfsg0-2)
I also tried
hplip-gui, and also reinstalled Ubuntu total 4 times over 2 different laptops but still printer is not working.
printer-driver-hpcupspackage? How are you installing hplip: apt or the one from HP website?
ls -lA /usr/lib/cups/filter/|grep cups