Update app.py

app.py

@@ -40,7 +40,7 @@ class BasicAgent:
     def __init__(self):
         workflow = StateGraph(State)
         workflow.add_node("assistant", assistant)
-        workflow.add_node("tools", ToolNode([tools]))
+        workflow.add_node("tools", ToolNode(tools))
         workflow.add_edge(START, "assistant")
         workflow.add_conditional_edge("assistant", tools_condition)
         workflow.add_edge("tools", "assistant")