unity报错 Saving Prefab to immutable folder is not allowed

问题

原因在于，使用了从别的模块中下载的预制体prefab，然后在本地项目scene中修改并保存，难以保存，因此报错。

解决

1. 最方便的办法，右键那个预制体，并选择unpack，这样就不是预制体，而是scene中的object了。

2. 另一种方法，如果这个prefab还用用好多次，就干脆在scene中unpack后，重新存到本地，制作成预制体。

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• unity报错 Saving Prefab to immutable folder is not allowed

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