Fatal error: Uncaught Error: Class "Symfony\Component\Config\Loader\FileLoader" not found in C:\xampp\htdocs\adminlte3\vendor\symfony\routing\Loader\DirectoryLoader 2.php:18
Stack trace:
#0 {main}
thrown in C:\xampp\htdocs\adminlte3\vendor\symfony\routing\Loader\DirectoryLoader 2.php on line 18