Update app.py

app.py

@@ -56,8 +56,7 @@ def create_message(client, thread, msg):
     message = client.beta.threads.messages.create(
         role="user",
         thread_id=thread.id,
-        content=msg["text"],
-        media=msg["files"],
+        content=[msg["text"], msg["files"]],
     )
     
     show_json("message", message)