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That is a severe error, I regret to have to say. Usually it means the printer has basically failed.
However, there are some things to be tried, in case it's a relatively minor occurrence of this error.
1: check in the interior of the printer. Make sure that
(a) no loose cartridges, re-seat each one in its place, one at a time.
(b) raise and then lower the printhead lock lever next to the cartridges... if your model has one. This makes sure the printhead is not loose
(c) make sure no loose paper scraps are in the interior of the printer
(d) check for loose parts inside the printer.
2: turn the printer Off, and then unplug it from power and from the computer.
Leave the printer Off, for at least 1/2 hour, then plug in to just the power again, turn it On, see if that clears the error.