- InfoCenter is down.
To understand whats wrong - Proxy error, bad gateway etc, this is a temp state. Upstream server response is broken and so the message.
- 502 Bad Gateway
- The server was acting as a gateway or proxy and received an invalid response from the upstream server.[2]
- 503 Service Unavailable
- The server is currently unavailable (because it is overloaded or down for maintenance).[2] Generally, this is a temporary state.
- 504 Gateway Timeout
- The server was acting as a gateway or proxy and did not receive a timely response from the upstream server.[2]
