我在使用aiogram和Fastapi时遇到fsm问题。我运行了aiogram_fsm_example中的代码，但将长轮询更改为 Fastapi 实现。这是我得到的代码：
import logging
from fastapi import FastAPI, Request
import aiogram.utils.markdown as md
from aiogram import Bot, Dispatcher, types
from aiogram.contrib.fsm_storage.memory import MemoryStorage
from aiogram.dispatcher import FSMContext
from aiogram.dispatcher.filters import Text
from aiogram.dispatcher.filters.state import State, StatesGroup
from aiogram.types import ParseMode
from aiogram.utils import executor
logging.basicConfig(level=logging.INFO)
API_TOKEN = "here's the bot token"
bot = Bot(token=API_TOKEN)
# For example use simple MemoryStorage for Dispatcher.
storage = MemoryStorage()
dp = Dispatcher(bot, storage=storage)
# States
class …