facebook-scraper: reactors no longer being returned

Just today, reactors stopped being returned for me. The following program exhibits the problem.

from facebook_scraper import get_posts, set_user_agent
from pprint import pprint
import sys

cookie_file = 'facebook_cookies.txt'

set_user_agent("Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)")

post_ids = sys.argv[1 : ]

for post_id in post_ids:
    post = next(get_posts(post_urls=[post_id], cookies=cookie_file,
                          options={'allow_extra_requests': False, 'reactors': True}))
    pprint(post)

When I invoke this as

python reactors.py 10158741881073601

the reactors field returned is None, although there are actually reactors to the post. It was working until today.