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<h1>502</h1>
<h2>Passerelle Défectueuse</h2>
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<blockquote cite="https://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html">
The server, while acting as a gateway or proxy, received an invalid response from the upstream server it accessed in attempting to fulfill the request.
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<figcaption><cite>HTTP/1.1 Status Code Definitions</cite></figcaption>
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