Ok, enabled with:
define( 'WP_DEBUG', true );
define( 'WP_DEBUG_LOG', true );
define( 'WP_DEBUG_DISPLAY', true );
in wp-config.php
This is the only error I see repeatedly every time I refresh:
29-Feb-2020 12:18:23 UTC PHP Warning: fileperms(): stat failed for /opt/bitnami/apps/wordpress/htdocs/index.php in /opt/bitnami/apps/wordpress/htdocs/wp-admin/includes/file.php on line 1818