Unhandled error in Deferred when using py_cli

using master branch 使用master分支 set up using docker, puting my own scrapy project in the container, and setting up py_cli using middleware. 使用docker部署，把原来的scrapy项目放入容器中，使用middleware加载py_cli. the spider works find outside the container and raise Unhandled error in Deferred when loading the middleware. 爬虫在容器外部完美运行，但是在容器内部在加载我自定义的middleware时出现这个错误，请大家帮忙看一下到底是什么问题

error screenshort 错误截图

code in middleware middleware中的代码

from haipproxy.client import ProxyFetcher

class HaipProxyMiddleware(object):

    def __init__(self):
        args = dict(host='127.0.0.1', port=6379, password='123456', db=0)
        self.scheme = 'bilibili'
        self.fetcher = ProxyFetcher(self.scheme, strategy='robin', redis_args=args)
        self.proxy = self.get_next_proxy()
        # self.start = time.time() * 1000

    def process_request(self, request, spider):
        # self.start = time.time() * 1000
        logger.info("this is request ip:" + self.proxy)
        request.meta['proxy'] = self.proxy

        return None

    def process_response(self, request, response, spider):
        # end = time.time() * 1000
        # 如果返回的response状态不是200，重新生成当前request对象
        if response.status != 200:
            self.fetcher.proxy_feedback('failure', self.proxy)
            logger.info('Current ip is blocked! The proxy is {}'.format(self.proxy))
            # 对当前request换下一个代理
            self.proxy = self.get_next_proxy()
            request.meta['proxy'] = self.proxy
            return request
        else:
            spider.logger.info('Request succeeded! The proxy is {}'.format(self.proxy))
            # if you use greedy strategy, you must feedback
            # duration=int(end - self.start)
            self.fetcher.proxy_feedback('success', self.proxy)
            return response

    def process_exception(self, request, exception, spider):
        logger.error('Request failed!The proxy is {}, {}. Exception:{}'.format(request.meta['proxy'], self.proxy, exception))
        # it's important to feedback, otherwise you may use the bad proxy next time
        self.fetcher.proxy_feedback('failure', self.proxy)
        # 对当前request换下一个代理
        self.proxy = self.get_next_proxy()
        request.meta['proxy'] = self.proxy
        return request

    def get_next_proxy(self):
        # 获取一个可用代理
        return self.fetcher.get_proxy()

    def spider_opened(self, spider):
        logger.info('Spider opened: %s' % spider.name)

SpiderClub / haipproxy

Unhandled error in Deferred when using py_cli #112