Update app.py

app.py

@@ -134,7 +134,7 @@ def guess_prompt_handler(original_image, add_color_image, add_edge_image):
         handle_file(original_image_file.name),
         handle_file(add_color_image_file.name),
         handle_file(add_edge_mask_file.name),
-        api_name="guess_prompt"
+        api_name="/guess_prompt"
     )
     
     if original_image_file and os.path.exists(original_image_file.name):