Removed event data

app.py

@@ -7,7 +7,7 @@ class State:
 
 state = State()
 
-js = "window.onMessage = (event) => {alert('Test message received: ' + event.data)}"
+js = "window.onMessage = (event) => {alert('Test message received: ')}"
 
 def update_values(context, question):
     output = context + "\n" + question