How to use the slackclient.server.SlackLoginError function in slackclient

def rtm_connect(self, reconnect=False, timeout=None, use_rtm_start=True, **kwargs):
        # rtm.start returns user and channel info, rtm.connect does not.
        connect_method = "rtm.start" if use_rtm_start else "rtm.connect"
        reply = self.api_requester.do(self.token, connect_method, timeout=timeout, post_data=kwargs)

        if reply.status_code != 200:
            raise SlackConnectionError(reply=reply)
        else:
            login_data = reply.json()
            if login_data["ok"]:
                self.ws_url = login_data['url']
                self.connect_slack_websocket(self.ws_url)
                if not reconnect:
                    self.parse_slack_login_data(login_data, use_rtm_start)
            else:
                raise SlackLoginError(reply=reply)

time.sleep(retry_after)
                self.rtm_connect(reconnect=reconnect, timeout=timeout)
            else:
                raise SlackConnectionError(
                    "RTM connection attempt was rate limited 5 times."
                )
        else:
            self.rtm_connect_retries = 0
            login_data = reply.json()
            if login_data["ok"]:
                self.ws_url = login_data["url"]
                self.connect_slack_websocket(self.ws_url)
                if not reconnect:
                    self.parse_slack_login_data(login_data, use_rtm_start)
            else:
                raise SlackLoginError(reply=reply)

def __init__(self, message='', reply=None):
        super(SlackLoginError, self).__init__(message)
        self.reply = reply

def __init__(self, message="", reply=None):
        super(SlackLoginError, self).__init__(message)
        self.reply = reply

def coffee_is_done():
    db = CoffeeDB(db_name='grandma.db')  # FIXME how to test it - Makefile?
    bot = Grandma(db)
    try:
        bot.connect()
    except SlackLoginError:
        abort(500)

    bot.notify()
    return ''