Fatal error: Uncaught Error: Class 'Composer\Pcre\PcreException' not found in /var/www/app/appregwebservice/vendor/composer/pcre/src/UnexpectedNullMatchException.php:14 Stack trace: #0 {main} thrown in /var/www/app/appregwebservice/vendor/composer/pcre/src/UnexpectedNullMatchException.php on line 14