Fatal error: Uncaught ArgumentCountError: mysqli_query() expects at least 2 arguments, 1 given in /var/www/vhosts/webspace.grupo8.com/httpdocs/core/db.php:9 Stack trace: #0 /var/www/vhosts/webspace.grupo8.com/httpdocs/core/db.php(9): mysqli_query() #1 /var/www/vhosts/webspace.grupo8.com/httpdocs/core/common.php(8): require_once('...') #2 /var/www/vhosts/webspace.grupo8.com/httpdocs/index.php(3): require_once('...') #3 {main} thrown in /var/www/vhosts/webspace.grupo8.com/httpdocs/core/db.php on line 9