Problem with animation, animation enter in a Loop with key "J"

[vital vale]

class IdleState extends State {
  constructor(parent) {
    super(parent);
  }

  get Name() {
    return 'idle';
  }

  Enter(prevState) {
    const idleAction = this._parent._proxy._animations['idle'].action;
    if (prevState) {
      const prevAction = this._parent._proxy._animations[prevState.Name].action;
      idleAction.time = 0.0;
      idleAction.enabled = true;
      idleAction.setEffectiveTimeScale(1.0);
      idleAction.setEffectiveWeight(1.0);
      idleAction.crossFadeFrom(prevAction, 0.5, true);
      idleAction.play();
    } else {
      idleAction.play();
    }
  }

  Exit() {
  }

  Update(_, input) {
    if (input._keys.forward || input._keys.backward) {
      this._parent.SetState('walk');
    }
    else if (input._keys.space) {
      this._parent.SetState('success');
    }
    else if(input._keys.sad_j) {
      this._parent.SetState('failure');
    }
  } 
};```

class FailureState extends State {
  constructor(parent) {
    super(parent);

    this._FinishedCallback = () => {
      this._Finished();
    }
  }

  get Name() {
    return 'failure';
  }

  Enter(prevState) {
    const curAction = this._parent._proxy._animations['failure'].action;
    const mixer = curAction.getMixer();
    mixer.addEventListener('finished', this._FinishedCallback);

    if (prevState) {
      const prevAction = this._parent._proxy._animations[prevState.Name].action;

      curAction.reset();  
      curAction.setLoop(THREE.LoopOnce, 1);
      curAction.clampWhenFinished = true;
      curAction.crossFadeFrom(prevAction, 0.2, true);
      curAction.play();
    } else {
      curAction.play();
    }
  }

  _Finished() {
    this._Cleanup();
    this._parent.SetState('idle');
  }

  _Cleanup() {
    const action = this._parent._proxy._animations['failure'].action;
    action.getMixer().removeEventListener('finished', this._CleanupCallback);
  }

  Exit() {
    this._Cleanup();
  }

  Update(_) {
  }
};```

i follow this tutorial but now i have 2 dance states one sucess another failure