Fatal error: Uncaught Error: Class 'Prophecy\Exception\Doubler\DoubleException' not found in /opt/lampp/htdocs/kuesioner/vendor/phpspec/prophecy/src/Prophecy/Exception/Doubler/MethodNotFoundException.php:14 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/kuesioner/vendor/phpspec/prophecy/src/Prophecy/Exception/Doubler/MethodNotFoundException.php on line 14