Update app.py

app.py

@@ -172,6 +172,8 @@ def multimodal_rag_query(user_query, num_images_to_retrieve):
             ]
         }
     ]
+    if not getattr(processor, "chat_template", None):
+        processor.chat_template = "{% for message in messages %}{{ message['role'].capitalize() }}: {{ message['content'] }}\n{% endfor %}Assistant:"
     
     prompt_text = processor.apply_chat_template(messages, tokenize=False, add_generation_prompt=True)
     inputs = processor(images=retrieved_images_raw, texts=[prompt_text], padding=True, return_tensors="pt").to(device)