Unity 插件导出模型报错

Unity 插件导出模型报错,初次次使用,请求大神指点一二
KeyNotFoundException: The given key was not present in the dictionary.
System.Collections.Generic.Dictionary`2[TKey,TValue].get_Item (TKey key) (at <d7ac571ca2d04b2f981d0d886fa067cf>:0)
r.a (UnityEngine.GameObject A_0, i A_1, System.Boolean A_2) (at <52f9fa4ca1c34de5ac5f2d69725a1abf>:0)
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