报错如下：
错误1：
ARBuilder: ImageTracker (EasyAR.ImageTrackerBehaviour) bind CameraDevice (EasyAR.CameraDeviceBehaviour)
UnityEngine.Debug:Log(Object)
EasyAR.ARBuilder:EasyBuild() (at Assets/EasyAR/Scripts/ARBuilder.cs:93)
EasyAR.EasyARBehaviour:Initialize() (at Assets/EasyAR/Scripts/EasyARBehaviour.cs:47)
EasyAR.EasyARBehaviour:Awake() (at Assets/EasyAR/Scripts/EasyARBehaviour.cs:21)
错误2：
Load target (True): 2 (idback) -> ImageTracker (EasyAR.ImageTrackerBehaviour)
UnityEngine.Debug:Log(Object)
EasyAR.ImageTargetBehaviour:OnTargetLoad(ImageTargetBaseBehaviour, ImageTrackerBaseBehaviour, Boolean) (at Assets/EasyAR/Scripts/ImageTargetBehaviour.cs:35)
EasyAR.ImageTargetBaseBehaviour:OnTargetLoad(ImageTrackerBaseBehaviour, Boolean)
EasyAR.ImageTrackerBaseBehaviour:OnTargetLoad(ImageTracker, Target, Boolean)
EasyAR.ImageTracker:OnLoad(IntPtr, IntPtr, Int32)
EasyAR.EngineNative:ezarImageTracker_checkCallBack(IntPtr)
EasyAR.EngineNative:ImageTracker_checkCallBack(IntPtr)
EasyAR.ImageTracker:CheckCallback()
EasyAR.ImageTrackerBaseBehaviour:Update()