Fatal error: Uncaught Error: Call to undefined function mysqli_connect() in /var/www/arcadex/engine/classes/mysql.php:47
Stack trace:
#0 /var/www/arcadex/engine/classes/mysql.php(82): db->connect()
#1 /var/www/arcadex/engine/modules/cron.php(47): db->query()
#2 /var/www/arcadex/engine/init.php(297): include_once('/var/www/arcade...')
#3 /var/www/arcadex/index.php(28): require_once('/var/www/arcade...')
#4 {main}
  thrown in /var/www/arcadex/engine/classes/mysql.php on line 47