Error when working with a database in Python?

Question

Python

with sqlite3.connect(config.db_name) as conn:
                cursor = conn.cursor()
                stmt = "SELECT token FROM users WHERE username=:login"
                args = {'login': call.message.from_user.username}
                cursor.execute(stmt, args)
                row = cursor.fetchone()
                token = row[0]['token']

Can't connect to DB via Python for Telegram bot, what's wrong?
Mistake:

2019-11-03T09:32:54.785202+00:00 app[bot.1]:     token = row[0]['token']
2019-11-03T09:32:54.78522+00:00 app[bot.1]: TypeError: 'NoneType' object is not subscriptable

Answer 1

Such an error is obtained like this:
In general, I did not work with sqlite3, but if you give me your database, I will help.
And so I can say that it does not find anything at your request, which means it shoves None, and you are trying to get data from it.