Fatal error: Uncaught Error: Interface 'Symfony\Component\Config\Definition\ConfigurationInterface' not found in C:\xampp\htdocs\iglooapp\vendor\cocur\slugify\src\Bridge\Symfony\Configuration.php:17 Stack trace: #0 {main} thrown in C:\xampp\htdocs\iglooapp\vendor\cocur\slugify\src\Bridge\Symfony\Configuration.php on line 17