Fatal error: Uncaught Error: Class 'Symfony\Component\String\AbstractString' not found in D:\xampp\htdocs\psp\backend\vendor\symfony\string\AbstractUnicodeString.php:29
Stack trace:
#0 {main}
thrown in D:\xampp\htdocs\psp\backend\vendor\symfony\string\AbstractUnicodeString.php on line 29