Services and Support » Troubleshooting » Messages » Message- Empty Grounds
The tray must be out for at least 20 seconds or the machine will not recognize the grounds tray has been emptied.
Note: The machine 'counts' the number of coffees made since the drip tray was last emptied.
It is best to always empty the grounds bin when emptying the drip tray.
Turn machine off from the power point for 10 minutes to clear any errors.
If neither of these work then workshop repair is required.