Update src/app/response.py

src/app/response.py

@@ -39,7 +39,7 @@ def describe_image(image: str, question: str) -> str:
     """
     try:
         # Check if image or question is None
-        if image is None or question is None:
+        if not image or not question:
             raise gr.Error("Please provide an image and a question.")
 
         # Message format for the model