I’ve been getting a lot of Cloudflare-to-server-related issues on MR the past few days. It’s hitting this message with nearly every other MR page load or GET/POST ajax-related conditions (such as posting a reply or uploading an image). The Cloudflare response typically reports a 520 (unspecified) or 525 (SSL handshake) error.
POST EDIT: Given where this original post is filed, this reply is not in the correct location for technical reporting issues. A mod may move or remove this as necessary.