Safety first: Unplug and allow hot surfaces to cool before cleaning.

Adjust grind and dose: Use the recommended grind size and coffee dose for your Fellow brewer model.
Check filter: Ensure you are using the correct Fellow-compatible paper filter and that it is properly seated.
Clean basket outlet: Remove the brew basket and clean the outlet hole and any valve mechanism to remove coffee oils and fines.
Descale if recurring: Internal restrictions can alter flow; run a descale cycle.

Electric brewer overflows the filter basket, causing coffee and grounds to spill over.

Possible Causes