Errors

Handling errors

Is recommended way that you should use errors inside handlers using try-except block, but in common cases you can use global errors handler at router or dispatcher level.

If you specify errors handler for router - it will be used for all handlers inside this router.

If you specify errors handler for dispatcher - it will be used for all handlers inside all routers.

@router.error(ExceptionTypeFilter(MyCustomException), F.update.message.as_("message"))
async def handle_my_custom_exception(event: ErrorEvent, message: Message):
    # do something with error
    await message.answer("Oops, something went wrong!")


@router.error()
async def error_handler(event: ErrorEvent):
    logger.critical("Critical error caused by %s", event.exception, exc_info=True)
    # do something with error
    ...

ErrorEvent

class aiogram.types.error_event.ErrorEvent(*, update: Update, exception: Exception, **extra_data: Any)

Internal event, should be used to receive errors while processing Updates from Telegram

Source: https://core.telegram.org/bots/api#error-event

update: Update

Received update

model_computed_fields: ClassVar[Dict[str, ComputedFieldInfo]] = {}

A dictionary of computed field names and their corresponding ComputedFieldInfo objects.

model_post_init(context: Any, /) → None

We need to both initialize private attributes and call the user-defined model_post_init method.

exception: Exception

Exception

Error types

exception aiogram.exceptions.AiogramError

Base exception for all aiogram errors.

exception aiogram.exceptions.DetailedAiogramError(message: str)

Base exception for all aiogram errors with detailed message.

exception aiogram.exceptions.CallbackAnswerException

Exception for callback answer.

exception aiogram.exceptions.SceneException

Exception for scenes.

exception aiogram.exceptions.UnsupportedKeywordArgument(message: str)

Exception raised when a keyword argument is passed as filter.

exception aiogram.exceptions.TelegramAPIError(method: TelegramMethod, message: str)

Base exception for all Telegram API errors.

exception aiogram.exceptions.TelegramNetworkError(method: TelegramMethod, message: str)

Base exception for all Telegram network errors.

exception aiogram.exceptions.TelegramRetryAfter(method: TelegramMethod, message: str, retry_after: int)

Exception raised when flood control exceeds.

exception aiogram.exceptions.TelegramMigrateToChat(method: TelegramMethod, message: str, migrate_to_chat_id: int)

Exception raised when chat has been migrated to a supergroup.

exception aiogram.exceptions.TelegramBadRequest(method: TelegramMethod, message: str)

Exception raised when request is malformed.

exception aiogram.exceptions.TelegramNotFound(method: TelegramMethod, message: str)

Exception raised when chat, message, user, etc. not found.

exception aiogram.exceptions.TelegramConflictError(method: TelegramMethod, message: str)

Exception raised when bot token is already used by another application in polling mode.

exception aiogram.exceptions.TelegramUnauthorizedError(method: TelegramMethod, message: str)

Exception raised when bot token is invalid.

exception aiogram.exceptions.TelegramForbiddenError(method: TelegramMethod, message: str)

Exception raised when bot is kicked from chat or etc.

exception aiogram.exceptions.TelegramServerError(method: TelegramMethod, message: str)

Exception raised when Telegram server returns 5xx error.

exception aiogram.exceptions.RestartingTelegram(method: TelegramMethod, message: str)

Exception raised when Telegram server is restarting.

It seems like this error is not used by Telegram anymore, but it’s still here for backward compatibility.

Currently, you should expect that Telegram can raise RetryAfter (with timeout 5 seconds)

error instead of this one.

exception aiogram.exceptions.TelegramEntityTooLarge(method: TelegramMethod, message: str)

Exception raised when you are trying to send a file that is too large.

exception aiogram.exceptions.ClientDecodeError(message: str, original: Exception, data: Any)

Exception raised when client can’t decode response. (Malformed response, etc.)