Fatal error: Uncaught Error: Class "League\Flysystem\Adapter\AbstractAdapter" not found in I:\www\frameworks\Laravel\vendor\league\flysystem\src\Adapter\AbstractFtpAdapter.php:12 Stack trace: #0 {main} thrown in I:\www\frameworks\Laravel\vendor\league\flysystem\src\Adapter\AbstractFtpAdapter.php on line 12