nginx: [error] invalid PID number "" in "/usr/local/nginx/logs/nginx.pid"

nginx: [error] invalid PID number "" in "/usr/local/nginx/logs/nginx.pid"

查看Nginx的版本号：nginx -V
启动Nginx：start nginx
快速停止或关闭Nginx：nginx -s stop
正常停止或关闭Nginx：nginx -s quit
配置文件修改重装载命令：nginx -s reload

执行-s stop后，导致nginx: [error] invalid PID number "" in "/usr/local/nginx/logs/nginx.pid"
解决：/usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf