您好我在this链接的帮助下使用firefox和分离的私有和公共证书创建了xero委托证书并将其上传到我的centos服务器上但是当我在服务器上运行我的xero应用程序时，我得到了跟随错误
* About to connect() to api-partner.network.xero.com port 443 (#0)
* Trying 198.61.252.64... * connected
* Connected to api-partner.network.xero.com (198.61.252.64) port 443 (#0)
* warning: ignoring unsupported value (1) of ssl.verifyhost
* CAfile: /etc/pki/tls/certs/ca-bundle.crt
CApath: none
* Unable to load client key -8178.
* NSS error -8178
* Closing connection #0
任何人都可以帮忙解决这个问题吗？