Fatal error: Uncaught mysqli_sql_exception: No database selected in C:\xampp\htdocs\WebSite\index.php:31 Stack trace: #0 C:\xampp\htdocs\WebSite\index.php(31): mysqli->query('SELECT id, name...') #1 {main} thrown in C:\xampp\htdocs\WebSite\index.php on line 31