Fatal error: Uncaught Error: Class 'Symfony\Component\String\AbstractString' not found in /var/www/html/test-project/my-app/vendor/symfony/string/AbstractUnicodeString.php:29
Stack trace:
#0 {main}
thrown in /var/www/html/test-project/my-app/vendor/symfony/string/AbstractUnicodeString.php on line 29