Fatal error: Uncaught Error: Class "Symfony\Component\Translation\Extractor\Visitor\AbstractVisitor" not found in /Applications/MAMP/htdocs/fislo/vendor/symfony/translation/Extractor/Visitor/ConstraintVisitor.php:22 Stack trace: #0 {main} thrown in /Applications/MAMP/htdocs/fislo/vendor/symfony/translation/Extractor/Visitor/ConstraintVisitor.php on line 22