I find these 2 errors from the apache error log. How do I correct them? My system is ISPConfig 3.1.7, Ubuntu 16.04.3 amd64, Apache 2.4.18 -------------------------------------- [ssl:error] [pid 3996] AH02217: ssl_stapling_init_cert: can't retrieve issuer certificate! [subject: CN=example.com / issuer: CN=Let's Encrypt Authority X3,O=Let's Encrypt,C=US / serial: 0406D7B1820DF4241F7583BFF65222AE80AA / notbefore: Sep 30 14:30:17 2017 GMT / notafter: Dec 29 14:30:17 2017 GMT] [ssl:error] [pid 3996] AH02604: Unable to configure certificate example.com:8080:0 for stapling
SSLCertificateChainFile probably missing in your ssl block? Code: SSLCertificateChainFile /etc/letsencrypt/live/domain.tld/chain.pem