It seems you're using the right certificates. Look these lines at /opt/bitnami/apache2/conf/bitnami/bitnami.conf:
Now look to where they point those files:
server.crt -> /etc/lego/certificates/ziaraadventures.com.crt
server.key -> /etc/lego/certificates/ziaraadventures.com.crt
Which are the certificates you created using Let's Encrypt, so that's perfect.
This is not an error, it's what you expect when Apache is started without any issue.
I don't see any issue on the information that was gathered. What error do you find on the browser when you try to access your WP site? Could you share the URL or a screenshot?
Could you share with me the apache_error log and the access_log? You can send them via mail to me to juan[at]bitnami[dot]com.