Are 522 Errors caused by Maintenance on LHR (London) data centers?

Our problems started on 26 October with many 522 errors on UK servers (see attached Cloudflare Error Analytics screenshot).

The 522 errors are occurring on all pages of our website but especially on pages containing several images. The 522 errors are not happening in any other country.

We have read that Cloudflare maintenance is taking place on various data centers LHR (London) October: 25 - 27 and November: 2 - 3.

Could this be the cause of our 522 errors?

A post was merged into an existing topic: Why are UK servers returning 522 errors?