Fatal error: Uncaught Error: Class 'Symfony\Component\Finder\Adapter\AbstractAdapter' not found in /home/optinadmin/rfl.optin.co.nz/concrete/vendor/symfony/finder/Symfony/Component/Finder/Adapter/PhpAdapter.php:21 Stack trace: #0 {main} thrown in /home/optinadmin/rfl.optin.co.nz/concrete/vendor/symfony/finder/Symfony/Component/Finder/Adapter/PhpAdapter.php on line 21