我正在运行一个以 Centos 7 为操作系统的流浪盒子。我安装了黑火没有错误，然后尝试从网络浏览器进行配置文件。它开始配置文件，但后来只是挂了又挂，从来没有完成。然后我通过命令行中的curl尝试了它，并得到以下错误：
$ blackfire curl https://gitlist.demo.blackfire.io/
Profiling: [####------------------------------------] 1/10
Error while running command: exit status 60
Use the option '--ignore-exit-status' to ignore command exit status
* About to connect() to gitlist.demo.blackfire.io port 443 (#0)
* Trying 54.76.137.79...
* Connected to gitlist.demo.blackfire.io (54.76.137.79) port 443 (#0)
* Initializing NSS with certpath: sql:/etc/pki/nssdb
* CAfile: /etc/pki/tls/certs/ca-bundle.crt
CApath: none
* Server certificate:
* subject: CN=gitlist.demo.blackfire.io
* start date: Jul 07 14:09:16 2019 GMT
* expire date: Oct 05 14:09:16 2019 GMT
* common name: gitlist.demo.blackfire.io
* issuer: CN=Let's Encrypt Authority X3,O=Let's Encrypt,C=US
* NSS error -8181 (SEC_ERROR_EXPIRED_CERTIFICATE)
* Peer's Certificate has expired.
* Closing connection 0
curl: (60) Peer's Certificate has expired.
More details here: http://curl.haxx.se/docs/sslcerts.html
curl performs SSL certificate verification by default, using a
"bundle"
of Certificate Authority (CA) public keys (CA certs). If the default
bundle file isn't adequate, you can specify an alternate file
using the --cacert option.
If this HTTPS server uses a certificate signed by a CA represented in
the bundle, the certificate verification probably failed due to a
problem with the certificate (it might be expired, or the name might
not match the domain name in the URL).
If you'd like to turn off curl's verification of the certificate, use
the -k (or --insecure) option.
有人可以向我解释这个错误是什么吗？我已经在其他项目上成功使用了Blackfire(尽管那些是Ubuntu盒子(，并且从未见过此错误。我在网上也找不到太多关于这个的信息。
cURL 不会发送 HTTP 请求，因为"对等证书已过期"。 按照建议，您可以添加"--不安全"选项。
但证书似乎已经更新。