Fatal error: Uncaught Error: Class 'Symfony\Component\DependencyInjection\Exception\InvalidArgumentException' not found in /home/devmecseminars/public_html/mec/vendor/symfony/dependency-injection/Exception/InvalidParameterTypeException.php:20
Stack trace:
#0 {main}
thrown in /home/devmecseminars/public_html/mec/vendor/symfony/dependency-injection/Exception/InvalidParameterTypeException.php on line 20