Fatal error: Uncaught PDOException: SQLSTATE[HY000] [1049] Unknown database 'userdb' in C:\xampp\htdocs\Tests\test\connection.php:7 Stack trace: #0 C:\xampp\htdocs\Tests\test\connection.php(7): PDO->__construct('mysql:dbname=us...', 'root', Object(SensitiveParameterValue)) #1 C:\xampp\htdocs\Tests\test\index.php(3): require('C:\\xampp\\htdocs...') #2 {main} thrown in C:\xampp\htdocs\Tests\test\connection.php on line 7