Update app.py

app.py

@@ -174,10 +174,10 @@ def list_run_steps(client, thread, run):
         step_details = step.step_details
         show_json("step_details", step_details)
 
-        if not step.tool_calls:
+        if not step_details.tool_calls:
             break
         
-        for tool_call in step.tool_calls:
+        for tool_call in step_details.tool_calls:
             result = execute_tool_call(tool_call)
     
     return run_steps