async PRAW with aiogram issues

import asyncpraw
import datetime
import logging
from aiogram import Bot, Dispatcher, executor, types, exceptions
import timeago


API_TOKEN = 'Bot API token'


logging.basicConfig(level=logging.DEBUG, format="%(asctime)s:%(levelname)s:%(message)s",
                    handlers=[logging.StreamHandler()])

bot = Bot(token=API_TOKEN)
dp = Dispatcher(bot)
reddit = asyncpraw.Reddit(client_id=client_id, client_secret=client_secret, user_agent=user_agent)


def time_ago(timestamp):
    return timeago.format(datetime.datetime.fromtimestamp(timestamp), datetime.datetime.now())


def flair_check(post, flair_name):
    try:
        post_flair = post.link_flair_text.lower()
    except AttributeError:
        post_flair = None
    if post_flair == flair_name:
        return True
    else:
        return False


async def check_title(message, search_terms, post):
    for search_term in search_terms:
        if search_term in post.title.lower():
            await message.reply(time_ago(post.created_utc) +
                                "\n" + post.title + "\n" +
                                "https://reddit.com" + post.permalink)


async def reddit_func(message):
    search_query = message.text.split(',')[1].strip().lower()
    search_terms = search_query.split()
    subred_name = message.text.split(',')[2].strip().lower()
    try:
        flair_name = message.text.split(',')[3].strip().lower()
    except IndexError:
        flair_name = ''
    print(search_query, search_terms, subred_name, flair_name)
    search_flair = None
    if flair_name != '':
        search_flair = flair_name
    await message.reply('You have asked for the terms: ' + search_query + '\n' +
                        'on the subreddit: ' + subred_name + '\n' +
                        'with flair: ' + ('None' if flair_name == '' else flair_name))
    subreddit = await reddit.subreddit(subred_name)
    while True:
        try:
            async for post in subreddit.stream.submissions(skip_existing=False):
                if flair_name == '':
                    await check_title(message, search_terms, post)
                else:
                    if flair_check(post, flair_name):
                        await check_title(message, search_terms, post)

        except exceptions as e:
            await message.reply(str(e))
            continue


@dp.message_handler(commands=['start', 'help'])
async def send_welcome(message: types.Message):
    await message.reply('Hello, this will pr)ompt you in case new post matching search terms on a given subreddit.\n'
                        'Send:\n'
                        'Check<comma>search terms (space separated)<comma>subreddit name<comma>flair filter(optional)\n'
                        '\nFor example:\ncheck, RAM,hardwareswap,selling')


@dp.message_handler(text_startswith=['check', 'Check', 'CHECK'])
async def check_msg(message: types.Message):
    await reddit_func(message)


if __name__ == '__main__':
    executor.start_polling(dp, skip_updates=True)