nginx 报错：[warn] "ssl_stapling" ignored, no OCSP responder URL in the certificate "x.com.fullchain.cer"
由于 Let's Encrypt 结束了对 OCSP 支持，所以 nginx -t 报错：
nginx: [warn] "ssl_stapling" ignored, no OCSP responder URL in the certificate "x.com.fullchain.cer"
解决方法，注释掉以下 nginx 配置的内容：
# ssl_stapling on;
# ssl_stapling_verify on;