I’ve suddenly started getting numerous 520 errors in the past 2 weeks, seemingly out of nowhere.
This affects my api.livefpltables.com subdomain. The errors are listed as “CORS Missing Allow Origin” in my browser network tab in devtools.
When I pause Cloudflare all 520 errors cease, however they persist when running Cloudflare’s development mode. This leads me to believe this is a Cloudflare issue and not an issue at my origin server.
Example Ray IDs