Hi, thank you for contacting JustAnswer.com. My name is Russell. I will do my best to provide the right answer to your question.
That message may, oddly enough, be owing to a paper jam.
Open the printer's back cover, and look for paper scraps there. Then close the back cover.
Open the scanner cover, to examine the interior of the printer. Remove any paper scraps or obstructions. Close the top cover.
Unplug the printer from the power. Leave it that way for at least 15 minutes.
Plug it back in, turn it On if necessary, see if the error is cleared.
If it is cleared by this method, please rate my Answre. If not, please Reply To Exert, telling me how it went and what you found by examining the printer. Thanks.