Fatal error: Uncaught Error: Class "Symfony\Component\String\AbstractString" not found in /home/admin/public_html/demo.admin.smartera.co.in/vendor/symfony/string/AbstractUnicodeString.php:29 Stack trace: #0 {main} thrown in /home/admin/public_html/demo.admin.smartera.co.in/vendor/symfony/string/AbstractUnicodeString.php on line 29