ssl_stapling ignored #Certificate #error occurs when there are problems in the Certificate files experienced while trying to restart Nginx web server.
It's an #SSL cert verification since you're using a self-signed cert this validation will not work.
To resolve this error >> https://ibmimedia.com/blog/138/how-to-fix-ssl-stapling-ignored-ssl-error
"ssl_stapling" ignored, issuer certificate not found for certificate #cloudflare
ssl_stapling'' ignored, issuer certificate not found for certificate self signed
ssl_stapling'' ignored, no ocsp responder #url in the certificate
nginx ssl_stapling
nginx ssl_stapling'' ignored, issuer certificate not found
ssl stapling
ssl_trusted_certificate
ssl stapling #nginx