Lightsail Proxied Results in "Failed" But 200 Response

We’re conducting tests on an AWS Lightsail NGINX server, which has been freshly set up with a default configuration and secured with a new Let’s Encrypt certificate.

When we route the server’s traffic through Cloudflare’s proxy, the webpage displays a “Failed” message, even though the HTTP headers indicate a successful 200 response.

However, if we bypass the Cloudflare proxy and connect directly, the NGINX default welcome page loads without any issues.

Any suggestions on what I may have missed?

HTTPS set to Full Strict?

This problem solved itself. There must have been a propagation issue which doesn’t seem right to me since the Failed effect took place immediately after the change.

Self resolved, strangely enough.

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