latest requirements

app.py

@@ -201,7 +201,7 @@ class BasicAgent:
         # Graph
         self.builder = StateGraph(state_schema=AgentState)
         # Define nodes: these do the work
-        self.builder.add_node("START", lambda state: state)
+        self.builder.add_node("START", lambda state: AgentState(**state), input=AgentState)
         self.builder.add_node("assistant", self.assistant)
         self.builder.add_node("tools", self.tools_node)
         # Define edges: these determine how the control flow moves