Random Not Definied

Code - ` msg = message.content

if any(word in msg for word in sad_words): await message.channel.send(random.choice(starter))`

Error - Traceback (most recent call last): File "/home/runner/Dank-Village-Bot/venv/lib/python3.8/site-packages/discord/client.py", line 343, in _run_event await coro(*args, **kwargs) File "main.py", line 40, in on_message await message.channel.send(random.choice(starter)) File "/nix/store/p21fdyxqb3yqflpim7g8s1mymgpnqiv7-python3-3.8.12/lib/python3.8/random.py", line 291, in choice return seq[i] TypeError: 'set' object is not subscriptable