Certificate not trusted in browser

[abw]

My domain is: wardray-premise.com

My web server is (include version): Apache 2.4

The operating system my web server runs on is (include version): Debian 4.9.51-1

The version of my client is (e.g. output of certbot --version or certbot-auto --version if you're using Certbot): certbot 1.5.0

Browser is saying certificate is not trusted. Certbot would not renew certificate as it didn't expire until december 2021. I created a new certificate anyway (sudo certbot certonly -d "wardray-premise.com,www.wardray-premise.com"). Web browser is seeing the new certificate but still says it's not trusted

[abw]

Problem solved!

My apache configuration was using cert.pem like so:

SSLCertificateFile /etc/letsencrypt/live/wardray-premise.com/cert.pem

And I changed it to use fullchain.pem

SSLCertificateFile /etc/letsencrypt/live/wardray-premise.com/fullchain.pem

That seems to have fixed the problem.