Hi @kojo,
Thanks for using Bitnami. I checked the bnsupport bundle but I don't see any modification done by the bncert tool. I see the error message below in the Apache log file instead
[Wed Sep 25 16:38:26.447781 2019] [proxy_fcgi:error] [pid 23261:tid 140579782391552] [client 154.160.6.2:18273] AH01071: Got error 'PHP message: PHP Warning: implode(): Invalid arguments passed in /opt/bitnami/apps/wordpress/htdocs/wp-content/themes/thegem/inc/custom-css.php
Can you check the issues in that file and try to visit your website again? Apart from that, regarding the Let's Encrypt issue, can you check the bncert log file located at /tmp/bncert-*.log? What is the output of manually running lego by using the command below? Remember to replace the EMAIL-ADDRESS and DOMAIN placeholders with your actual values.
sudo /opt/bitnami/letsencrypt/lego --tls --email="EMAIL-ADDRESS" --domains="DOMAIN" --domains="www.DOMAIN" --path="/opt/bitnami/letsencrypt" run
Regards,
Gonzalo