There was some change in CLOUDFLARE today. I have a site unchanged for week 2. And today it started working out of order. I have 2 domains connected to the site (all through CLOUDFLARE). And so it turned out that the first is malfunctioning and the second is working quite well.
I was also able to visit my site through hosts and it was working there.
And so I came to the conclusion that CLOUDFLARE is to blame for the errors of the site, but I do not fully understand what has changed in his work. The error is thrown when working with OauthAPI.
I figured out the problem. CLOUDFLARE cuts out POST requests …
How can this be fixed?