When rendering an image the output is grey I've tried rendering an image using the Cycles render engine. here is the output:(everything looks good)


I tried rendering the same image, but using Radeon ProRender engine. This is how it looks at samples 28/128(not ready yet, it looks fine):

 And this is the output.. I don't understand why I get a grey image. Did I miss something ?

EDITHere are my blender preferences

 I have also installed this from their official website //// i do not know what other settings so show here

 My .blend file is this
Your Render Layer is not connected to the composite node.
You need to go to Compositing, here you need to connect the render layer image to the composite node