Fatal error: Uncaught Error: Class 'Symfony\Component\String\AbstractUnicodeString' not found in C:\xampp\htdocs\ApiSigestWin\vendor\symfony\string\UnicodeString.php:35 Stack trace: #0 {main} thrown in C:\xampp\htdocs\ApiSigestWin\vendor\symfony\string\UnicodeString.php on line 35