Fatal error: Uncaught Error: Interface 'Symfony\Component\Config\Definition\ConfigurationInterface' not found in /home/www/public_html/admin/shared/codeigniter/vendor/symfony/config/Tests/Fixtures/Configuration/ExampleConfiguration.php:17 Stack trace: #0 {main} thrown in /home/www/public_html/admin/shared/codeigniter/vendor/symfony/config/Tests/Fixtures/Configuration/ExampleConfiguration.php on line 17