Thank you for using Bitnami. I just found this error message in the Apache's log
[Thu Dec 20 10:34:38.106363 2018] [proxy_fcgi:error] [pid 1160:tid 139979208283904] [client 10.0.159.97:60640] AH01071: Got error 'PHP message: PHP Fatal error: Uncaught Error: Call to undefined function et_fb_get_layout_type() in /bitnami/wordpress/wp-content/themes/Divi/includes/builder/framework.php:528\nStack trace:\n#0 /opt/bitnami/wordpress/wp-includes/class-wp-hook.php(288): et_builder_body_classes
Maybe there is something wrong in the WordPress' theme you are using. Can you try to use a new theme and check if the error disappears?
Just to confirm, you are using the WordPress Container solution, right? Did you make any other change in the installation?