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domain	phpcms9.com
summary	Here’s a summary of the content typically found on a website displaying a "502 Bad Gateway" nginx error: The 502 Bad Gateway error signifies that your web server (acting as a gateway) received an invalid response from another server upstream. In the context of an nginx setup, this most often means that the server behind nginx – likely another web server or application server – is temporarily unavailable, overloaded, or returning an error that nginx cannot process correctly. It’s a communication problem between the servers. Troubleshooting often involves checking the upstream server's status, ensuring DNS resolution is correct, examining server logs for errors, and sometimes restarting services. The issue isn’t with your browser directly, but a problem in the network communication chain.
title	502 Bad Gateway
description	502 Bad Gateway
keywords	gateway
upstreams
downstreams
nslookup	A 43.130.32.235
created	2025-07-28
updated	2025-09-01
summarized	2026-02-07