Unity MARS Black screen on Android

Unity Engine
,
1

Hello !
Could you help me, please, with Unity MARS, I get a black screen when launch app in Android.
First, I have install MARS in Menu > Assets > Import Package > Custom Package on 2019.4 LTS.

I build APK with SDK 26, i get this error on Android Logcat and i get black screen, i can increase volume

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2

It looks like (it’s a little hard to read) that the error is related to location services, so might be unrelated to seeing a black screen.

First can you confirm that you have the ARCore package installed in the package manager and that it is activated in Player Settings > XR plugins?

3

Thank you for your answer It work :)! i have install ARCore with this guide : https://developers.google.com/ar/develop/unity/quickstart-android