Silex Payum错误:不支持Request Capture{model: Identity}

我目前正在使用Silex(最新稳定)使一个网站，我需要实现支付系统。所以我尝试安装Payum(最新的稳定)，一切工作，直到我调用准备页面，它将我重定向到Payum捕获的页面(/payment/capture/hash of the request)，我得到这个错误:

Request Capture{model: Identity} is not supported.

对于安装，我遵循官方指南:http://payum.org/doc/1.0/PayumSilexProvider/get-it-started

我也试过所有其他版本的Payum，但都没有成功。

下面是错误的跟踪:

in RequestNotSupportedException.php line 29
at RequestNotSupportedException::create(object(Capture)) in Gateway.php line 99
at Gateway->execute(object(Capture)) in ExecuteSameRequestWithModelDetailsAction.php line 32
at ExecuteSameRequestWithModelDetailsAction->execute(object(Capture)) in Gateway.php line 107
at Gateway->execute(object(Capture)) in CaptureController.php line 20
at CaptureController->doAction(object(Request))
at call_user_func_array(array(object(CaptureController), 'doAction'), array(object(Request))) in HttpKernel.php line 147
at HttpKernel->handleRaw(object(Request), '1') in HttpKernel.php line 68
at HttpKernel->handle(object(Request), '1', true) in Application.php line 586
at Application->handle(object(Request)) in Application.php line 563
at Application->run() in app_dev.php line 12

Thanks in advance