Error message in Pidgin

[Erdy Barlahan]

The self signed certification has expired. Now, users get the following
message after launching Pidgin:
"SSL Certificate Verification. Accept certificate for <name of server>? The
certificate for <name of server> could not be validated.
The certificate has expired and should not be considered valid".
Users click on "accept" button, and can continue using Pidgin.
How do I renew a self signed cert, which expired yesterday? I can't find
the CA or the certificate. If possible, how can I renew the cert via Open
Fire Management Console v3.4.2. thanks!
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