dos窗口切换到HttpRunnerManager目录执行脚本，启动work报错解决方案

执行python manage.py celery -A HttpRunnerManager worker --loglevel=info报错

解决办法： tornado降级回到5.1.1

执行命令： pip3 install tornado==5.1.1

再次执行python manage.py celery -A HttpRunnerManager worker --loglevel=info