Fatal error: Uncaught Error: Class 'Doctrine\DBAL\Platforms\AbstractPlatform' not found in /opt/lampp/htdocs/kuesioner/vendor/doctrine/dbal/lib/Doctrine/DBAL/Platforms/PostgreSqlPlatform.php:40 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/kuesioner/vendor/doctrine/dbal/lib/Doctrine/DBAL/Platforms/PostgreSqlPlatform.php on line 40