Blackfire 分析错误 - 退出状态 60

Blackfire profiling error - exit status 60

我是运行一个装着Centos 7的流浪盒子OS。我安装 blackfire 没有错误,然后尝试从网络浏览器进行分析。它开始了配置文件,但随后一直挂起,从未完成。然后我在命令行中通过 curl 尝试它并得到以下错误:

$ 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.

谁能给我解释一下这个错误是什么?我已经在其他项目中成功使用过 Blackfire(尽管那些是 Ubuntu 框)并且从未见过此错误。我在网上也找不到很多关于这个的信息。

cURL 未发送 HTTP 请求,因为 "Peer's Certificate has expired"。 按照建议,您可以添加“--insecure”选项。

但是好像证书已经更新了。