Php Silex Payum错误：不支持请求捕获{model:Identity}

我目前正在使用Silex（lastest stable）制作一个网站，在那里我需要实现一个支付系统。因此，我尝试安装Payum（最新稳定版本），在调用prepare页面之前，一切正常，该页面将我重定向到Payum capture的页面（/payment/capture/

请求的散列），我收到以下错误：

Request Capture{model: Identity} is not supported.

对于安装，我遵循了官方指南：

我也尝试过Payum的所有其他版本，但都没有成功

以下是错误的跟踪：

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

如果有人能帮助我，我会高兴的！：）

提前感谢
好的，我找到了答案，感谢github和Payum Silex的创建者@makasim:）

只需添加以下内容：

<?php
$gateways['paypal_ec']->addExtension(new StorageExtension(
    new FilesystemStorage(__DIR__.'/cache/payum', 'Payum\Core\Model\Payment')
));