Fatal error: Uncaught mysqli_sql_exception: MySQL server has gone away in /var/www/html/src/requireLogin.php:27 Stack trace: #0 /var/www/html/src/requireLogin.php(27): mysqli->prepare() #1 /var/www/html/categorie.php(127): sql() #2 {main} thrown in /var/www/html/src/requireLogin.php on line 27