Fatal error: Uncaught Error: Interface "Symfony\Component\Config\Definition\ConfigurationInterface" not found in /usr/www/unityweb/public/castopodtest/vendor/cocur/slugify/src/Bridge/Symfony/Configuration.php:17 Stack trace: #0 {main} thrown in /usr/www/unityweb/public/castopodtest/vendor/cocur/slugify/src/Bridge/Symfony/Configuration.php on line 17