Evgen Fil

It's not really a bug because one of the changes introduced in Bot API 5.3 was renaming `getChatMembersCount` to `getChatMemberCount`: https://core.telegram.org/bots/api-changelog#june-25-2021

It might be a good suggestion to remove backwards-compatibility methods from docs as 3.0 would be "brand new" version without any need for such methods, so I'm reopening it. @aiogram/dev-team...

We can also implement something like ConversationHandler from python-telegram-bot (example usage [here](https://github.com/python-telegram-bot/python-telegram-bot/blob/1e7f4fae6f7f91f407efd38e98aff3eeaaf7f0c9/examples/conversationbot.py#L126-L142) and [here](https://github.com/python-telegram-bot/python-telegram-bot/blob/1e7f4fae6f7f91f407efd38e98aff3eeaaf7f0c9/examples/conversationbot2.py#L114-L134)) But it's not the best option, I think.

Hello, @asimaranov, and thanks for contributing! If you've finished working on this feature, please reformat your code with `make reformat` so the tests can pass.

> Why can it throw "E ModuleNotFoundError: No module named 'motor'"? @asimaranov, because it's not installed during testing. Look how Redis is tested in [`tests/`](https://github.com/aiogram/aiogram/tree/dev-3.x/tests) directory and [`.github/workflows/tests.yml`](https://github.com/aiogram/aiogram/blob/dev-3.x/.github/workflows/tests.yml) and set...

Hello, @vorlov-bash. Thanks for reporting. For now you can try one of these workarounds: 1) https://gist.github.com/Forevka/c4d00a9f716b5c79123786383b06f4c0 1) `dp.errors_handlers.once = True`

> Core developers discussion: https://t.me/c/1173777615/8552 @Olegt0rr Just in case 

Already implemented in 3.0: #303 Do you want this feature in 2.x too?

Maybe we should add a built-in optional flag for sequential processing of updates? /cc @JrooTJunior

> I think this should be added to https://github.com/aiogram/aiogram/projects/3#column-18991685. Ok, good point, webhook setup was changed in 3.0 comparing to 2.x