Перестал забирать контент с сайта

class ConnectionBuilder:
    def __init__(self, proxy):
        self.proxy = proxy
 
    def build_connection(self, cookiejar = None):
        if cookiejar is None:
            cookiejar = cookielib.CookieJar()
        context = ssl.SSLContext(ssl.PROTOCOL_TLSv1)
 
        handlers = [urllib2.HTTPCookieProcessor(cookiejar),urllib2.HTTPSHandler(context=context),urllib2.HTTPRedirectHandler()]
        if not (self.proxy is None):
            self.proxy.build_handlers(handlers)
        opener = urllib2.build_opener(*handlers)
 
        opener.addheaders = [('User-Agent','Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.163 Safari/537.36'),
                             ('Accept', '*/*'), ('Accept-Language', 'ru-RU')]
        return opener
 
def GET(target, post=None):
    try:
        req = urllib2.Request(target, post)
        cookiejar = login_or_none()
        url_opener = connection_builder.build_connection(cookiejar)
        http = None
        with contextlib.closing(url_opener.open(req)) as resp:
            http = resp.read()
        return http
    except Exception, e:
        xbmc.log( '[%s]: GET EXCEPT [%s]' % (addon_id, e), 4 )
        showMessage('HTTP ERROR', e, 5000)
 
print GET('https://kinozal-tv.appspot.com/') #пустота