fix:1、修复bug。2、更换sdk

Assets/Scenes/MainScene.unity

@@ -1090,52 +1090,6 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: c677bf10dae182441b932bf59cb07226, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
---- !u!1 &1361344198
-GameObject:
-  m_ObjectHideFlags: 0
-  m_CorrespondingSourceObject: {fileID: 0}
-  m_PrefabInstance: {fileID: 0}
-  m_PrefabAsset: {fileID: 0}
-  serializedVersion: 6
-  m_Component:
-  - component: {fileID: 1361344199}
-  - component: {fileID: 1361344200}
-  m_Layer: 0
-  m_Name: GameObject
-  m_TagString: Untagged
-  m_Icon: {fileID: 0}
-  m_NavMeshLayer: 0
-  m_StaticEditorFlags: 0
-  m_IsActive: 1
---- !u!4 &1361344199
-Transform:
-  m_ObjectHideFlags: 0
-  m_CorrespondingSourceObject: {fileID: 0}
-  m_PrefabInstance: {fileID: 0}
-  m_PrefabAsset: {fileID: 0}
-  m_GameObject: {fileID: 1361344198}
-  serializedVersion: 2
-  m_LocalRotation: {x: 0, y: 0, z: 0, w: 1}
-  m_LocalPosition: {x: -6.7998056, y: 1.8808191, z: -0.15202397}
-  m_LocalScale: {x: 1, y: 1, z: 1}
-  m_ConstrainProportionsScale: 0
-  m_Children: []
-  m_Father: {fileID: 0}
-  m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
---- !u!114 &1361344200
-MonoBehaviour:
-  m_ObjectHideFlags: 0
-  m_CorrespondingSourceObject: {fileID: 0}
-  m_PrefabInstance: {fileID: 0}
-  m_PrefabAsset: {fileID: 0}
-  m_GameObject: {fileID: 1361344198}
-  m_Enabled: 1
-  m_EditorHideFlags: 0
-  m_Script: {fileID: 11500000, guid: ee1dea4970f5e3b4b9299169c8b45c58, type: 3}
-  m_Name: 
-  m_EditorClassIdentifier: 
-  appID: 
-  is_init: 0
 --- !u!1 &1442936684
 GameObject:
   m_ObjectHideFlags: 0
@@ -1431,4 +1385,3 @@ SceneRoots:
   - {fileID: 1260515730}
   - {fileID: 1183762477}
   - {fileID: 2110239013}
-  - {fileID: 1361344199}