很多ViewComponent的EntityRef<T>变量都找不到：ES_PlayerHeadItem继承Entity了，在ViewComponent定义的EntityRef<ES_PlayerHeadItem>变量，为什么反射不到呢？
报错：System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. —> System.Exception: cant convert to entityref, entity is null
public EntityRef<AnimatorControllerComponent> m_animatorBaseComponent;
private EntityRef<ESJoystick_Move> m_esjoystick_move = null;
报错截图：
