13분 16초 li:nth-of-type(8) 질문

입력한 코드

from bs4 import BeautifulSoup

import sys

import io

sys.stdout = io.TextIOWrapper(sys.stdout.detach(), encoding = 'utf-8')

sys.stderr = io.TextIOWrapper(sys.stderr.detach(), encoding = 'utf-8')

fp = open("food-list.html", encoding="utf-8")

soup = BeautifulSoup(fp, "html.parser")

print("1",soup.select_one("li:nth-of-type(8)").string)

에러

Traceback (most recent call last):
  File "C:\Users\User0\Desktop\code\section2\download2-6-2.py", line 25, in <module>
    print("1",soup.select_one("li:nth-of-type(8)").string)
AttributeError: 'NoneType' object has no attribute 'string'

[Finished in 0.181s]

이렇게 에러나면서 실행이 안되는데 어떤문제때문에 안되는건가요??