Fatal error: Uncaught Error: Class 'Psr\Log\NullLogger' not found in /home/optinadmin/rfl.optin.co.nz/concrete/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/Log/NullLogger.php:23 Stack trace: #0 {main} thrown in /home/optinadmin/rfl.optin.co.nz/concrete/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/Log/NullLogger.php on line 23