Fatal error: Uncaught Error: Class "Symfony\Component\Translation\Dumper\FileDumper" not found in I:\www\php_vendor_tests\vendor\symfony\translation\Dumper\XliffFileDumper.php:22 Stack trace: #0 {main} thrown in I:\www\php_vendor_tests\vendor\symfony\translation\Dumper\XliffFileDumper.php on line 22