Fatal error: Uncaught Error: Class 'PhpCsFixer\AbstractFixer' not found in /var/www/app/appregwebservice/vendor/nexusphp/cs-config/src/Fixer/AbstractCustomFixer.php:19 Stack trace: #0 {main} thrown in /var/www/app/appregwebservice/vendor/nexusphp/cs-config/src/Fixer/AbstractCustomFixer.php on line 19