I create my own filter for Tbot ​​in aiogram, the error MyFilter() takes no arguments comes out. wat tu doo?

Question

Python

from aiogram.dispatcher.filters import BoundFilter
from aiogram import types
class MyFilter(BoundFilter):
    key = 'is_admin'

def __init__(self, is_admin):
    self.isin = is_admin

async def check(self, message: types.Message):
    member = await bot.get_chat_member(message.chat.id, message.from_user.id)
    return member.is_chat_admin()

The error itself is:
TypeError: MyFilter() takes no arguments

Answer 1

Well, you have init and check not class methods, but separate functions, you forgot the indent