Explains the meaning and fixes of 502 Proxy Error error, covers troubleshooting steps for Nginx, Apache, Cloudflare and other scenarios, and helps you to quickly solve server gateway error problems.

This article describes common configuration issues that cause ERR_TOO_MANY_REDIRECTS errors in Nginx, such as HTTP to HTTPS redirects, X-Forwarded-Proto header delivery errors, and proxy protocol conflicts, and provides solutions.