Fatal error: Uncaught Error: Class "Symfony\Component\DependencyInjection\Extension\Extension" not found in /home/astechc1/public_html/vendor/mercuryseries/flashy-bundle/src/DependencyInjection/MercurySeriesFlashyExtension.php:11
Stack trace:
#0 {main}
thrown in /home/astechc1/public_html/vendor/mercuryseries/flashy-bundle/src/DependencyInjection/MercurySeriesFlashyExtension.php on line 11