add some warning

Rodin.py

@@ -151,9 +151,9 @@ class Generator:
             image_file = load_image(image_path)
             log("INFO", "Image loaded, processing...")
             if prompt and task_uuid:
-                preprocess_response = rodin_preprocess_image(generate_prompt=False, image=image_file, name="images.png", token=self.token)
+                preprocess_response = rodin_preprocess_image(generate_prompt=False, image=image_file, name="images.jpeg", token=self.token)
             else:
-                preprocess_response = rodin_preprocess_image(generate_prompt=True, image=image_file, name="images.png", token=self.token)
+                preprocess_response = rodin_preprocess_image(generate_prompt=True, image=image_file, name="images.jpeg", token=self.token)
             log("INFO", f"Image preprocessed: {preprocess_response.get('statusCode')}")
             if 'error' in preprocess_response:
                 log("ERROR", f"Error in image preprocessing: {preprocess_response['error']}")
@@ -165,12 +165,12 @@ class Generator:
             else:
                 try:
                     if not (prompt and task_uuid):
-                        prompt = preprocess_response.get('prompt', None)   
+                        prompt = preprocess_response.get('prompt', None)
                     processed_image = "data:image/png;base64," + preprocess_response.get('processed_image', None)
                     success = True
                 except Exception as e:
                     log("ERROR", f"Error in image preprocessing: {preprocess_response}")
-                    raise e
+                    raise gr.Error("Busy connection, please try again later.")
 
         return prompt, processed_image