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触发原因未知，猜测是策划把别的预设A挪了一个改了个名字成了预设B。想要改动预设B中的组件产生了一下报错。
Cannot restructure Prefab instance.
Children of a Prefab instance cannot be deleted or moved,and components cannot be reordered.
You can open the Prefab in Prefab Mode to restructure the Prefab Asset itself,or unpack the Prefab instance to remove its Prefab connection.
处理方案：
解除预制体关系Unpack Prefab/Unpack Prefab Completely，然后修改好预设以后，重新创建一下。
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