Fatal error: Uncaught Error: Class 'PhpCsFixer\RuleSet\AbstractMigrationSetDescription' not found in /var/www/app/appregwebservice/vendor/friendsofphp/php-cs-fixer/src/RuleSet/Sets/PHPUnit50MigrationRiskySet.php:23 Stack trace: #0 {main} thrown in /var/www/app/appregwebservice/vendor/friendsofphp/php-cs-fixer/src/RuleSet/Sets/PHPUnit50MigrationRiskySet.php on line 23