bug in gathering comments

dear althonos
i have a problem during capturing all user comments of a post !
the code only capture almost 40 comments and not all.
it seems that instalooter does not load comments completely
how should i solve this problem?
i use code below

from instalooter.looters import ProfileLooter
looter = ProfileLooter("franz_ferdinand")

users = set()
for media in looter.medias():
info = looter.get_post_info(media['shortcode'])
for comment in post_info['edge_media_to_comment']['edges']:
user = comment['node']['owner']['username']
users.add(user)

sinerely yours