Question Multiple XR plugin issue! [ASAP]

I have one problem. I have 2 XR plugins.
1. ARCore XR Plugin
2. Google Cardboard XR plugin.

When they both selected, only ARCore initializes, and when using Cardboard function, it says "Plugin must be initialized"
,

When I uncheck the ARCore. Cardboard works great.

Tried to use this
https://docs.unity3d.com/Manual/xrsdk-runtime-discovery.html
But when I call Start(). it gives me errors
RenderTexture.Create failed: width & height must be larger than 0
Screen position out of view frustum (screen pos 0.000000, 0.000000, 1000.000000) (Camera rect 0 0 0 0)
Screen position out of view frustum (screen pos 0.000000, 0.000000, 1000.000000) (Camera rect 0 0 0 0)
RenderTexture.Create failed: width & height must be larger than 0
RenderTexture.Create failed: width & height must be larger than 0
Screen position out of view frustum (screen pos 0.000000, 0.000000, 1000.000000) (Camera rect 0 0 0 0)
Screen position out of view frustum (screen pos 0.000000, 0.000000, 1000.000000) (Camera rect 0 0 0 0)
RenderTexture.Create failed: width & height must be larger than 0
RenderTexture.Create failed: width & height must be larger than 0


Question. How to Initialize each plugin separately. Thanks