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The import Vuforia Ground Plane is incorrect and cannot be packaged as apk

Hi,

   My version is Unity2018.2.14f1,The Vuforia Ground Plane case downloaded from the assetstore was incorrect, showing the Unable to find shader Custom/VideoBackground, which is the reason why I cannot package as apk. The screenshot of the attachment is the specific error information.

   In addition, I downloaded arcore1.3.0 according to the official tutorial, but it cannot be recognized in the plane after being packaged. Do you need any other configuration?

Thanks