Update app.py

app.py

@@ -203,7 +203,7 @@ def chat(message, history):
     ### TODO
     if tool_call_id:
         print("### tool_call_id=" + tool_call_id)
-        print(tool_call_result)
+        print(tool_call_result.to_json())
 
         # https://platform.openai.com/docs/api-reference/runs/submitToolOutputs
         run = client.beta.threads.runs.submit_tool_outputs(
@@ -212,7 +212,7 @@ def chat(message, history):
             tool_outputs=[
                 {
                   "tool_call_id": tool_call_id,
-                  "output": tool_call_result
+                  "output": tool_call_result.to_json()
                 }
             ]
         )