Fatal error: Uncaught Error: Class "Symfony\Component\VarDumper\Caster\ConstStub" not found in I:\www\frameworks\Laravel\vendor\symfony\var-dumper\Caster\LinkStub.php:19 Stack trace: #0 {main} thrown in I:\www\frameworks\Laravel\vendor\symfony\var-dumper\Caster\LinkStub.php on line 19