【Python】AttributeErrorの原因がわからない

■概要
Instagramで指定したハッシュタグの投稿数を自動的に取得するコードを書いています
以下のコードを実行しているのですが、エラーが手で来てしまい
色々調べたのですが、まだまだ初心者で知識が及ばず、皆様のお力をいただけますと幸いです。

■現状のコード

html
1from bs4 import BeautifulSoup
2import requests
3import json
4import re
5import pprint
6
7def get_json_data(url):
8
9   res = requests.get(url)
10   html = BeautifulSoup(res.content, 'html.parser')
11
12   pattern = re.compile('window._sharedData = ({.*?});')
13   script = html.find("script", text=pattern)
14   data = pattern.search(script.text).group(1)
15   json_user_data = json.loads(data)
16
17   return(json_user_data)
18
19def get_hashtag_stats(tags):
20
21   for tag in tags:
22
23       json_hashtag = get_json_data('https://www.instagram.com/explore/tags/'+str(tag))
24       print(json_hashtag)
25
26       number_of_posts = json_hashtag['entry_data']['TagPage'][0]['graphql']['hashtag']['edge_hashtag_to_media']['count']
27       # timestamp_1st = json_hashtag['entry_data']['TagPage'][0]['graphql']['hashtag']['edge_hashtag_to_media']['edges'][0]['node']['taken_at_timestamp']
28       # timestamp_1st = datetime.fromtimestamp(timestamp_1st)
29       # timestamp_10th = json_hashtag['entry_data']['TagPage'][0]['graphql']['hashtag']['edge_hashtag_to_media']['edges'][9]['node']['taken_at_timestamp']
30       # timestamp_10th = datetime.fromtimestamp(timestamp_10th)
31       #
32       # #最新の投稿と10個前の投稿の時間の差を求める
33       # diff = timestamp_1st - timestamp_10th
34       #
35       # post_freq= int(diff.total_seconds()/(10*60))
36
37       # output_line = [datetime.now().strftime("%d/%m/%Y %H:%M:%S"), str(tag), str(number_of_posts), str(post_freq)]
38       # print(output_line)
39       #
40       # with open(r'/Users/sakailab/Desktop/Report_Python/hashtags_stats.csv', 'a') as f:
41       #     writer = csv.writer(f)
42       #     writer.writerow(output_line)
43
44       if sleep_timer != 0:
45           time.sleep(sleep_timer)
46
47   return()
48
49def clean_hashtags(tags):
50
51    if tags[0] == '#':
52
53        tags = tags.replace(' ', '')
54        hash_array = tags.split('#')
55
56    else:
57
58        hash_array = tags.split(',')
59        taglist = [a for a in hash_array if a != '']
60
61    return(taglist)
62
63
64if __name__ == "__main__":
65
66    hashtags = "#LondonNature #britain #centrallondon #england"
67    print(hashtags)
68    get_hashtag_stats(clean_hashtags(hashtags))
69    # pprint(taglist)

■エラー

html
1Traceback (most recent call last):
2  File "hashtag_posts.py", line 44, in <module>
3    get_hashtag_posts(clean_hashtags(hashtags))
4  File "hashtag_posts.py", line 21, in get_hashtag_posts
5    json_hashtag = get_json_data('https://www.instagram.com/explore/tags/'+str(tag))
6  File "hashtag_posts.py", line 13, in get_json_data
7    data = pattern.search(script.text).group(1)
8AttributeError: 'NoneType' object has no attribute 'group'