The daemon is still running and the websocket cannot connect

[pantao1]

The environment is lnmp, php 7.3, worker man 3.5, using wss://domain name: 443. We use php start. php start - d, but the daemon process is still running. The user cannot connect to the websocket, and for some reason, the nginx connection count is not high. After restarting, this situation still occurs after a while