HI Stefan:
Welcome to join. I think you may be caused by referring to the loss of an object. This is very common. Do you check whether the parent object is still there?
欢迎你的加入，我想你可能是参考某个对象丢失了造成的，这很常见，你检查下父对象还在吗？
HI Stefan:
Welcome to join. I think you may be caused by referring to the loss of an object. This is very common. Do you check whether the parent object is still there?
欢迎你的加入，我想你可能是参考某个对象丢失了造成的，这很常见，你检查下父对象还在吗？