return img_input, download_file

app.py

@@ -359,7 +359,7 @@ def predict_pipeline(img_input,
                                 font_size=font_size,
                                 keypt_color=keypt_color,
                                 marker_size=marker_size)
-        return img_input
+        return img_input, download_file
 
     else:
         # Compute kpts for each crop