Discord Bot argument of type 'NoneType' is not iterable
I’m working on a Discord Bot that is connected to my MySQL to give and receive Data. In this part of the code, I have a message event that toggles whenever a User/Client sends a message. I’m getting an "argument of type ‘NoneType’ is not iterable" error and I have no idea how to fix it and I couldn’t find any answer on the forums.
Traceback (most recent call last): File "C:\Users\itzbe\AppData\Local\Programs\Python\Python38-32\lib\site-packages\discord\client.py", line 312, in _run_event await coro(*args, **kwargs) File "C:/Users/itzbe/Desktop/Discord/Ency Bot/bot.py", line 37, in on_message if str(message.author.id) in mutedList: TypeError: argument of type 'NoneType' is not iterable I would really appreciate it if one of you could help me solve this issue.
@client.event async def on_message(message): immunity = 'SELECT userID FROM immunity WHERE userID = (%s)' curs.execute(immunity, (str(message.author.id),)) immunityList = curs.fetchone() muted = 'SELECT userID FROM muted WHERE userID = (%s)' curs.execute(muted, (str(message.author.id),)) mutedList = curs.fetchone() filter = 'SELECT word FROM filter' curs.execute(filter) filterList = curs.fetchall() if str(message.author.id) in mutedList: muted = message.author.mention + ' You are currently muted!' await message.channel.send(muted) await message.delete() if message.author.id not in immunityList: for word in mutedList: if message.author.id not in filterList: if message.content.count(word) > 0: id = message.author.id getUserID = 'INSERT INTO muted (userID) VALUES (%s)' userInfo = (id) curs.execute(getUserID, userInfo) db.commit() getUserID = 'INSERT INTO user (warning) VALUES (%s)' userInfo = (+1) curs.execute(getUserID, userInfo) db.commit() msg = message.author.mention + ' said ' + '**' + message.content + '**' + ' and has been set in a Timeout!' await message.delete() await message.channel.send(msg) await client.process_commands(message) 
