Possible cause:
The amount of water in the tank is not enough to make the beverage and the message to empty the grounds container will be displayed shortly.
Follow the step-by-step guide on how to empty the grounds container:
When removing the drip tray, the grounds container must be emptied, even if it contains few grounds. If this is not done, when you make the next coffees, the grounds container may fill up more than expected and clog the machine.
If you make a number of cappuccinos one after the other, the metal cup tray becomes hot. Wait for it to cool down before touching it and handle it from the front only.
Clean thoroughly to remove all residues left on the bottom. This can be done using the spatula on the brush provided.