Fatal error: Uncaught TypeError: mysqli_free_result(): Argument #1 ($result) must be of type mysqli_result, bool given in /homepages/32/d368311302/htdocs/livre_d_or/db/MySQLi.php:28 Stack trace: #0 /homepages/32/d368311302/htdocs/livre_d_or/db/MySQLi.php(28): mysqli_free_result(true) #1 /homepages/32/d368311302/htdocs/livre_d_or/index.php(158): alex_livre_sql->sql_close() #2 {main} thrown in /homepages/32/d368311302/htdocs/livre_d_or/db/MySQLi.php on line 28