Fatal error: Uncaught Error: Class "Doctrine\DBAL\Driver\AbstractPostgreSQLDriver" not found in E:\Ampps\www\CAS\vendor\laravel\framework\src\Illuminate\Database\PDO\PostgresDriver.php:8 Stack trace: #0 {main} thrown in E:\Ampps\www\CAS\vendor\laravel\framework\src\Illuminate\Database\PDO\PostgresDriver.php on line 8