Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\DependencyInjection\Extension" not found in /home/dbdevweblamp/public_html/vendor/yectep/phpspreadsheet-bundle/src/DependencyInjection/PhpSpreadsheetExtension.php:10 Stack trace: #0 {main} thrown in /home/dbdevweblamp/public_html/vendor/yectep/phpspreadsheet-bundle/src/DependencyInjection/PhpSpreadsheetExtension.php on line 10