ertificate&quot; error means that OpenSSL has been unable to find a trusted CA for the chain of certificates provided by the server in its trusted certificate store. Check your trusted certificate store configuration again.</p>

<p>Note that s_client is a testing tool and will still allow you to connect to the TLS server regardless of the verification error. Most applications should not do this and should abort the connection in the event of a verification error.</p>

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