Fatal error: Uncaught Error: Class 'Symfony\Component\Console\Output\StreamOutput' not found in /home/optinadmin/rfl.optin.co.nz/concrete/vendor/symfony/console/Output/ConsoleOutput.php:31 Stack trace: #0 {main} thrown in /home/optinadmin/rfl.optin.co.nz/concrete/vendor/symfony/console/Output/ConsoleOutput.php on line 31