The spouts need cleaning.
Follow the step-by-step guide:
To clean later, press "Cancel". The next time the appliance is turned on, the message is displayed again.
Then remove the coffee spouts downwards. Press "Next".
It is recommended to run in a dishwasher. Alternatively. wash thoroughly with warm water and mild washing-up liquid.
Attach them to the central outlet. Make sure the word "INSERT" is at the top and is visible when the spouts have been inserted.