I ve this problème. Can you help me ?
When exactly does the error occur? Are you able to run any print? If not - please, ignore the precise extruder homing (settings -> working options -> precise extruder homing -> off). Is there any improvement then?
Please, check if the endstop are properly connected. Also, I would suggest starting with the axes maintenance - refer to the manual. Lubricate the rods, check if the belts are tense (remember about the X/Y motors) etc.
Moreover - update the printer to 2.2.3 firmware.
If the problem persists - please, contact us via support form. We will provide you with further help.