It is most likely your machine’s thermal failsafe was triggered, which automatically turns the motor off to avoid overheating and motor damage. This may happen if you try to process excessive amounts, have left the appliance running for too long, or are processing “heavy” doughs.
To resolve this, simply press STOP on the base and wait for 1 hour for the motor to fully cool down before attempting to switch it on again.
If this does not resolve the issue then please contact Customer Care here.