我试图更新我的服务器的证书。现在的已经1个月前过期了，但是我到现在都没去处理。
我尝试使用该letsencrypt-auto renew命令但失败了：
注意：我更改了域/用户/服务器名称。
user@vps:~/letsencrypt# ./letsencrypt-auto renew
Updating letsencrypt and virtual environment dependencies.......
Running with virtualenv: sudo /home/user/.local/share/letsencrypt/bin/letsencrypt renew
Processing /etc/letsencrypt/renewal/www.example.com.conf
2016-04-02 07:07:00,862:WARNING:letsencrypt.cli:Attempting to renew cert from /etc/letsencrypt/renewal/www.example.com.conf produced an unexpected error: You've asked to renew/replace a seemingly valid certificate with a test certificate (domains: www.example.com, example.com). We will not do that unless you use the --break-my-certs flag!. Skipping.
All renewal attempts failed. The following certs could not be renewed:
/etc/letsencrypt/live/www.example.com/fullchain.pem (failure)
1 renew failure(s), 0 parse failure(s) …