MOSFETs on Motor Controller died
They got destroyed due to inductive kickback. The TVS diode is not a correct choice, you should use a schottky diode at that position.
When the MOSFETs were switched off, the motor induced a high voltage, that was clamped with TVS, but these devices are meant to surge a short pulse, not to dump entire motor energy, so it has blown, consequently MOSFETs also blown due to HV pulse.