[RSS Feed/News] cURL error 60

[XenForo]

Hi everyone, recently I have a problem in the installation of a particular addon (I have inserted others without any errors), when I try to install it this notification comes out:

• cURL error 60: SSL certificate problem: certificate has expired (see http://curl.haxx.se/libcurl/c/libcurl-errors.html)

Since I'm not very experienced, could you tell me what it depends on and how to solve? Thank you

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