我的自定义支付网关的Woocommerce结帐页面错误

Question

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

我知道它的产生 Woocommerce / include / class-wc-checkout.php文件

我发现了一些与我的问题相关的链接但对我没用 Woocommerce plugin gives 'We were unable to process your order'
https://support.woothemes.com/hc/en-us/community/posts/201888769-checkout-fails-to-submit

如果有人对此有任何想法，请告诉我。