Fly.io site with Cloudflare has 520 error, how to fix?
I have a site deployed on fly.io , I activated cloudflare for the DNS, but now I always get 520 error when trying to open the page, If I "paused" the Cloudflare protection then it starts working again. Anyone knows?
1 Reply
have you checked these: https://developers.cloudflare.com/support/troubleshooting/cloudflare-errors/troubleshooting-cloudflare-5xx-errors/#error-520-web-server-returns-an-unknown-error
Troubleshooting Cloudflare 5XX errors · Cloudflare Support docs
When troubleshooting most 5XX errors, the correct course of action is to first contact your hosting provider or site administrator to troubleshoot and …