Update src/chat_langraph.py

src/chat_langraph.py

@@ -220,9 +220,8 @@ def input_node(state: chatstate):
 
 def llmresponse(state: chatstate):
     response = llm.stream(state["messages"])
-    for chunk in response:
         
-        yield {"messages": [chunk]};
+    return {"messages": [response]};
 
 
 def checktool(state: chatstate):