Update src/chat_langraph.py

src/chat_langraph.py

@@ -219,7 +219,7 @@ def input_node(state: chatstate):
 
 
 def llmresponse(state: chatstate):
-    response = llm.stream(state["messages"])
+    response = llm.invoke(state["messages"])
         
     return {"messages": [response]};