elasticsearch 连接错误

 控制台打印信息：

 elasticsearch.exceptions.ConnectionError: ConnectionError(: Failed to establish a new connection: [Errno 111] Connection refused) caused by: NewConnectionError(: Failed to establish a new connection: [Errno 111] Connection refused)

这个报错是由于  elasticsearch 连接错误，检查一下有没有开启elasticsearch服务

将elasticsearch启动，再次运行就不会出错了