fix: changing image type

app.py

@@ -240,7 +240,7 @@ def show_rendered_image(r,theta,phi):
     rgb, depth = render_rgb_depth(
         nerf_loaded, rays_flat[None, ...], t_vals[None, ...], rand=False, train=False
     )
-    return(rgb[0], depth[0])
+    return(rgb[0].numpy(), depth[0].numpy())
 
 # app.py text matter starts here
 st.title('NeRF:Neural Radiance Fields')