Fatal error: Uncaught Error: Interface 'EasyWeChat\Kernel\Contracts\EventHandlerInterface' not found in C:\web\qhzyy\vendor\overtrue\wechat\src\OfficialAccount\Server\Handlers\EchoStrHandler.php:23 Stack trace: #0 {main} thrown in C:\web\qhzyy\vendor\overtrue\wechat\src\OfficialAccount\Server\Handlers\EchoStrHandler.php on line 23