What does the '502.3' part of the error code indicate?

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Grade: Education Subject: Support
What does the '502.3' part of the error code indicate?
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The '502.3' is a specific variant of the 502 Bad Gateway error. It's often associated with problems related to the Transport Layer Security (TLS) protocol, specifically issues with SSL/TLS handshake failures between the gateway and the upstream server. This suggests a problem with certificate validation or encryption.