Fatal error: Uncaught Error: Class 'League\Flysystem\Plugin\AbstractPlugin' not found in D:\svn\bitfx\vendor\league\flysystem\src\Plugin\ForcedRename.php:8 Stack trace: #0 {main} thrown in D:\svn\bitfx\vendor\league\flysystem\src\Plugin\ForcedRename.php on line 8