Woocommerce plugin gives 'We were unable to process your order'

问题

I'm using Child theme of Unite Theme. And using WooCommerce - excelling eCommerce plugin for Ecommerce. And I done payumoney integration.

When I'm checkout, it's giving following error,

{"result":"failure","messages":"
\n\t\t\t
We were unable to process your order, please try again.<\/li>\n\t<\/ul>\n","refresh":"true","reload":"false"}

Where is problem?

来源：https://stackoverflow.com/questions/29318303/woocommerce-plugin-gives-we-were-unable-to-process-your-order