Update vlm.py

vlm.py

@@ -66,7 +66,7 @@ def build_messages(message: dict, history: list[tuple]):
                 {
                     "type": "image_url",
                     "image_url": f"data:image/jpeg;base64,{encode_image(image)}"
-                } for image_url in user_turn
+                } for image in user_turn
             ]
             combined_user_input.extend(image_content)
         elif isinstance(user_turn, str): # Text input