Nvidia's VXGI2-4.21 + PixelStreaming triggers "Failed to register input back buffer"

It’s the dx 12.

I have the same error with 4.21 vxgi. Port all the project in 4.22 preview. Work very well in local, but i notice that there isnt ray tracing.
So i add the argument -dx12 to start the exe like you need to use raytracing in the editor end get same error.

Sorry for my english.