Pink screen in Android

My game function OK in Unity. OK in WebGL. In Unity Android <DX11> is OK (image4 with my Main menu game).

But if I build game for Android, download to my phone, I have still pink all screen.

Reset grafic in Project Setting no helped.

I use tablet 7" Huawei with Android 6. Unity 2019.1.4f1 (64-bit). I instaled SDK with Android Studio.

But I dont know maybe some setting. In Canvas or something with SDK?

Thanks Mirek

 

Please, can you help me, what it specifically means? I learn Unity and basic C#. But I am not professional programer.

 

If I switch platform to Android, in console write:
NullReferenceException: Object reference not set to an instance of an object
UnityEditorInternal.AnimationWindowControl.GetAnimationModeDriver () (at C:/buildslave/unity/build/Editor/Mono/Animation/AnimationWindow/AnimationWindowControl.cs:646)
UnityEditorInternal.AnimationWindowControl.StopPreview () (at C:/buildslave/unity/build/Editor/Mono/Animation/AnimationWindow/AnimationWindowControl.cs:428)
UnityEditorInternal.AnimationWindowControl.OnDisable () (at C:/buildslave/unity/build/Editor/Mono/Animation/AnimationWindow/AnimationWindowControl.cs:142)
UnityEditorInternal.AnimationWindowState.OnDisable () (at C:/buildslave/unity/build/Editor/Mono/Animation/AnimationWindow/AnimationWindowState.cs:315)

 

But in Unity all function. And in build in console is not problem.

 

Now I have news in console:
Failed getting available Android API levels. Make sure your android sdk tools version is 25 or higher and you have internet connection. System.Threading.ThreadHelper:ThreadStart()

 

Today I buy new phone HUAWEI for my dad. With android 9. There it function....