fix: updated the app engine std pub/sub sample (GoogleCloudPlatform#3097)

chenyumic · busunkim96 · leahecole · web-flow · commit ae464b1fb5b6 · 2020-04-09T12:34:16.000-07:00
Co-authored-by: Bu Sun Kim &lt;8822365+busunkim96@users.noreply.github.com&gt;
Co-authored-by: Leah E. Cole &lt;6719667+leahecole@users.noreply.github.com&gt;
diff --git a/appengine/standard/pubsub/main.py b/appengine/standard/pubsub/main.py
@@ -68,7 +68,7 @@ def receive_messages_handler():
             current_app.config['PUBSUB_VERIFICATION_TOKEN']):
         return 'Invalid request', 400
 
-    envelope = json.loads(request.data.decode('utf-8'))
+    envelope = json.loads(request.get_data().decode('utf-8'))
     payload = base64.b64decode(envelope['message']['data'])
 
     MESSAGES.append(payload)
