Fatal error: Uncaught Error: Interface "Workerman\Coroutine\Channel\ChannelInterface" not found in E:\www\xmvc\v5.0\composer\vendor\workerman\coroutine\src\Channel\Fiber.php:28 Stack trace: #0 {main} thrown in E:\www\xmvc\v5.0\composer\vendor\workerman\coroutine\src\Channel\Fiber.php on line 28