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Solution 1: Physical Inspection
An obstruction on the scanner area can cause this error.
Lift the lid over the glass, and search for any foreign particle like pieces of paper with a flash light.
If you see any, carefully remove it without damaging the surrounding hardware.
Solution 2: Reset the Printer
Unplug the power from the printer.
Wait for a few minutes. Now press and hold the Power button on the printer for a minimum 60 seconds, and keep holding. Now plug the power back into the printer while holding the power button for about 60 seconds more and then check if your problem still persists and it shows the same error.