Update app.py

app.py

@@ -130,7 +130,7 @@ def respond_to_input(user_input: str) -> str:
         "tool_result": None
     }
     # Use .run(initial_state, user_input) in v0.3.x
-    final_state = compiled_graph.run(initial_state, user_input)
+    final_state = compiled_graph.invoke(initial_state, user_input)
     # The “final” on END means agent_out has no more tool calls and finished reasoning
     # We return the last assistant message from state["messages"]:
     return final_state["messages"][-1].replace("ASSISTANT: ", "")