Fatal error: Uncaught Error: Class 'League\Flysystem\Adapter\AbstractAdapter' not found in /home/app/htdocs/ninja/vendor/league/flysystem-rackspace/src/RackspaceAdapter.php:15 Stack trace: #0 {main} thrown in /home/app/htdocs/ninja/vendor/league/flysystem-rackspace/src/RackspaceAdapter.php on line 15