In a Workout trainer get blocked

Trainer: Wahoo Kickr Core
Device with Zwift App: macbook air
ANT + or BLE: ANT +
ERG mode or SIM: ERG mode

Yesterday in a training, the kickr core “blocked” and it was impossible to pedal (very high resistance) because it got stuck and cannot reach the wattage goal. this situation only occurs in training.

When I stopped pedaling, ERG appeared momentarily off and the roller was already loose and I could cycle again, after a while the problem would return.

Does anyone know how to solve this problem?

It seem like you got the spiral of death.

is not spiral of death, it is impossible to pedal because the kickr is really stuck.