Aiogram и кастомные фильтры

import filters, handlers
from aiogram import executor
from loader import dp
from utils.notify_admins import on_startup_notify
from utils.set_bot_commands import set_default_commands   
 
async def on_startup(dispatcher):
    await set_default_commands(dispatcher)
    await on_startup_notify(dispatcher)
 
 
if __name__ == '__main__':
    executor.start_polling(dp, on_startup=on_startup, skip_updates=True)

from data.config import load_admins
from aiogram.dispatcher.filters import BoundFilter
from aiogram.types.message import Message
 
 
class IsAdmin(BoundFilter):
    async def check(self, msg: Message):
        print('check')
        ADMINS = await load_admins()
        # ADMINS = список айдишек администраторов
 
        user = msg.from_user.id
        if user not in ADMINS:
            await msg.answer('Только для администраторов')
        return user in ADMINS

from loader import dp
from .admin_filter import IsAdmin
 
 
if __name__ == "filters":
    dp.filters_factory.bind(IsAdmin)

from filters.admin_filter import IsAdmin
from aiogram.types.message import Message
 
from loader import dp
 
 
@dp.message_handler(IsAdmin(), commands='test')
async def show_apanel(msg: Message):
    await msg.answer(msg)

from . import handler1