Fatal error: Uncaught Error: Call to undefined method wpdb::db_server_info() in /srv/users/nextgenconferenceacct/apps/nextgenconference/public/wp-content/plugins/wp-simple-firewall/src/lib/src/Controller/Controller.php:240
Stack trace:
#0 /srv/users/nextgenconferenceacct/apps/nextgenconference/public/wp-content/plugins/wp-simple-firewall/src/lib/src/Controller/Controller.php(637): FernleafSystems\Wordpress\Plugin\Shield\Controller\Controller->isMysqlVersionSupported('5.5')
#1 /srv/users/nextgenconferenceacct/apps/nextgenconference/public/wp-includes/class-wp-hook.php(289): FernleafSystems\Wordpress\Plugin\Shield\Controller\Controller->blockIncompatibleUpdates(Object(stdClass))
#2 /srv/users/nextgenconferenceacct/apps/nextgenconference/public/wp-includes/plugin.php(206): WP_Hook->apply_filters(Object(stdClass), Array)
#3 /srv/users/nextgenconferenceacct/apps/nextgenconference/public/wp-includes/option.php(1801): apply_filters('site_transient_...', Object(stdClass), 'update_plugins')
#4 /srv/users/nextgenconferenceacct/apps in /srv/users/nextgenconferenceacct/apps/nextgenconference/public/wp-content/plugins/wp-simple-firewall/src/lib/src/Controller/Controller.php on line 240