cesium unreal vr applicaiton cannot run on piconeo3 vr device

I have a piconeo3 vr device, and develop with [Unreal XR SDK](https://developer.pico-interactive.com/sdk/index?device_id=1&platform_id=2),other ue4 applicaiton can run well in pico neo3.
but my cesium unreal vr applicaiton can only preview in UE4 editor,when i package the project to apk and install it in pico neo3,the screen is black and nothing is displayed in pico neo3.
i want some help,thanks!

Start by reproducing the packaged APK on a Pico Neo3 and compare it with the working UE4 editor preview. Inspect the Unreal Engine packaging output and device runtime logs to identify why the Cesium application displays a black screen; done means the packaged application renders correctly on the device.

Written by the indexing model from the issue text.