说明一下，因为需要扩展一个域名，所以需要重新配置SSL证书：
2.报错提示：
Problem in /www/server/panel/vhost/nginx/huidatech.com.conf: tried to insert directive "['ssl_certificate', '/var/lib/letsencrypt/snakeoil/0002_cert.pem']" but found conflicting "['ssl_certificate', '/etc/letsencrypt/live/www.huidatech.com/fullchain.pem']".
3.删除冲突文件/etc/letsencrypt/live/http://www.huidatech.com/fullchain.pem 也不行，请大家帮帮忙，谢谢！
huidatech.com.conf 配置文件配了几个证书？
access_log /www/wwwlogs/huidatech.com.log;
error_log /www/wwwlogs/huidatech.com.error.log; # managed by Certbot # managed by Certbot
ssl_certificate /etc/letsencrypt/live/www.huidatech.com/fullchain.pem; # managed by Certbot
ssl_certificate_key /etc/letsencrypt/live/www.huidatech.com/privkey.pem; # managed by Certbot
include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot