Update app.py

app.py

@@ -88,7 +88,8 @@ def test_agent_availability(agent_url):
     try:
         # Send a simple manifest request to test
         envelope = build_manifest_request_envelope(agent_url)
-        envelope_dict = envelope.to_dict()
+        json_str = envelope.to_json()
+        envelope_dict = json.loads(json_str)
         payload = {"openFloor": envelope_dict}
         
         headers = {'Content-Type': 'application/json'}