[LayaAirIDE 2.0][unity动画导出] unity导出3d动画报错

unity插件版本2.8.0 
unity版本2018.4.23
 
使用插件导出动画.
勾选预烘焙骨骼后提示
Animator must have SkinnedMeshRenderer as Child ! 
请问这个应该要怎样处理
 
(没有勾选预烘焙骨骼)报错
KeyNotFoundException: The given key was not present in the dictionary.
System.Collections.Generic.Dictionary`2[TKey,TValue].get_Item (TKey key) (at <e1319b7195c343e79b385cd3aa43f5dc>:0)
n.a (UnityEngine.GameObject A_0, System.Boolean A_1, backAnimatorData A_2) (at <0524304338e24b0bb697e3c82a810b25>:0)
n.a () (at <0524304338e24b0bb697e3c82a810b25>:0)
n.b (System.String A_0) (at <0524304338e24b0bb697e3c82a810b25>:0)
LayaAir3D.exportResource (System.Boolean isDebug, System.Int32 Platformindex, System.String lastname) (at <0524304338e24b0bb697e3c82a810b25>:0)
b+k.b () (at <0524304338e24b0bb697e3c82a810b25>:0)
p.b (p+a A_0) (at <0524304338e24b0bb697e3c82a810b25>:0)
p.a () (at <0524304338e24b0bb697e3c82a810b25>:0)
UnityEditor.EditorApplication.Internal_CallUpdateFunctions () (at E:/unity/Editor/Mono/EditorApplication.cs:200)