Fatal error: Uncaught Error: Class 'PharIo\Version\AbstractVersionConstraint' not found in /var/www/app/appregwebservice/vendor/phar-io/version/src/constraints/ExactVersionConstraint.php:12 Stack trace: #0 {main} thrown in /var/www/app/appregwebservice/vendor/phar-io/version/src/constraints/ExactVersionConstraint.php on line 12