quick fix AIMessage

app.py

@@ -148,7 +148,7 @@ def predict(message, history, request: gr.Request):
 
     # Create the prompt with system message, context, and conversation history
     messages = [SystemMessage(content=RAG_PROMPT_TEMPLATE)]
-    messages.extend[AIMessage(content="This bot allows you finding informations related to Rémi Cazelles's projects, work and education")]
+    messages.extend([AIMessage(content="This bot allows you finding informations related to Rémi Cazelles's projects, work and education")])
     messages.extend(history_langchain_format)
     combined_message = f"Context: {context}\n\nQuestion: {message}"
     messages.append(HumanMessage(content=combined_message))