运行时删除BarChart后报错

[wmqKevin]

当我在运行时删除BarChart后报错如下：
MissingReferenceException: The object of type 'CanvasRenderer' has been destroyed but you are still trying to access it.
Your script should either check if it is null or you should not destroy the object.
at (wrapper managed-to-native) UnityEngine.CanvasRenderer.get_cull(UnityEngine.CanvasRenderer)
at UnityEngine.UI.GraphicRaycaster.Raycast (UnityEngine.Canvas canvas, UnityEngine.Camera eventCamera, UnityEngine.Vector2 pointerPosition, System.Collections.Generic.IList1[T] foundGraphics, System.Collections.Generic.List1[T] results) [0x00018] in G:\MZLU3D\Doctor-U_HDRP\Library\PackageCache\com.unity.ugui@1.0.0\Runtime\UI\Core\GraphicRaycaster.cs:335
at UnityEngine.UI.GraphicRaycaster.Raycast (UnityEngine.EventSystems.PointerEventData eventData, System.Collections.Generic.List1[T] resultAppendList) [0x00329] in G:\MZLU3D\Doctor-U_HDRP\Library\PackageCache\com.unity.ugui@1.0.0\Runtime\UI\Core\GraphicRaycaster.cs:236 at UnityEngine.EventSystems.EventSystem.RaycastAll (UnityEngine.EventSystems.PointerEventData eventData, System.Collections.Generic.List1[T] raycastResults) [0x0003f] in G:\MZLU3D\Doctor-U_HDRP\Library\PackageCache\com.unity.ugui@1.0.0\Runtime\EventSystem\EventSystem.cs:263
at UnityEngine.EventSystems.PointerInputModule.GetMousePointerEventData (System.Int32 id) [0x000a3] in G:\MZLU3D\Doctor-U_HDRP\Library\PackageCache\com.unity.ugui@1.0.0\Runtime\EventSystem\InputModules\PointerInputModule.cs:295
at UnityEngine.EventSystems.StandaloneInputModule.ProcessMouseEvent (System.Int32 id) [0x00001] in G:\MZLU3D\Doctor-U_HDRP\Library\PackageCache\com.unity.ugui@1.0.0\Runtime\EventSystem\InputModules\StandaloneInputModule.cs:540
at UnityEngine.EventSystems.StandaloneInputModule.ProcessMouseEvent () [0x00001] in G:\MZLU3D\Doctor-U_HDRP\Library\PackageCache\com.unity.ugui@1.0.0\Runtime\EventSystem\InputModules\StandaloneInputModule.cs:526
at UnityEngine.EventSystems.StandaloneInputModule.Process () [0x0003e] in G:\MZLU3D\Doctor-U_HDRP\Library\PackageCache\com.unity.ugui@1.0.0\Runtime\EventSystem\InputModules\StandaloneInputModule.cs:280
at UnityEngine.EventSystems.EventSystem.Update () [0x000f6] in G:\MZLU3D\Doctor-U_HDRP\Library\PackageCache\com.unity.ugui@1.0.0\Runtime\EventSystem\EventSystem.cs:501

[monitor1394]

v3.8.0已处理