Do you have a Pvr_UnitySDK prefab in your new scene?
Note: If you have multiple scenarios in your project, it is recommended to place only the PvrUnitySDK prefab in the main scenario, and then add the "DontDestroyOnLoad" method under this prefab. Ensure that there is only one PvrUnitySDK prefab when switching scenes.
Try adding the following script to the Pvr_UnitySDK prefab;
public class DontDestroyOnLoadTest : MonoBehaviour
private void Awake()