When I try to render my image, I see a white background and gray silhouette of image. Is there a solution?
Welcome 
…
…since you provided no more info about your scene at all ( too bright lights , non assicatied materials, wrongly position camers ?? ) this is very hard to tell…
You may have to elaborate this to get a more suited answer.
(You also aren’t testing something so i moved this nor using 2.8 so removed the tag… to get you some more “audience” 
)
Welcome!
Does it look the same in rendered viewport? I am wondering if you worked on this scene in material preview mode and didn’t realize that your actual lighting during render would look different than the preview.