Printer keeps printing garbage

Sir,
H5: Incorrect paper size. (There is a mismatch of paper size between the machine and the print driver.) This codes indicate a paper size error when printing from a controller.go to Control panel on your computer printers/fax and delete any print jobs also alsopwr off/on the copier press the stop button stop and canex all print jobs

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

A size error has occurred with
the paper loaded in the tray.

Press the [Clear] key, slide out the
tray in which the size error has
occurred, and slide it back into the
copier.
Check the paper size set with
Custom Size Input and carry out
the Custom Size Input procedure
once again
PER THE OPERATORS MANUAL, GO to KONICAMINOLTA US web site to down load operators manual

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

I believe that if you update the firmware for the copier, you shoud see that the garbage printing should go away.