Fatal error: Uncaught Error: Interface "Pheanstalk\Contract\CommandInterface" not found in E:\www\xmvc\v5.0\composer\vendor\pda\pheanstalk\src\Contract\CommandWithDataInterface.php:11 Stack trace: #0 {main} thrown in E:\www\xmvc\v5.0\composer\vendor\pda\pheanstalk\src\Contract\CommandWithDataInterface.php on line 11