Floating "Unpacking error" in Yandex.Webmaster?

Question

Nginx

Hello! Since March, I have had the following error in Ya. Webmaster:
"Your server is configured to transfer compressed data using a gzip or deflate stream. The archive is transferred incorrectly, and therefore the robot cannot unpack it. Regarding the occurrence and elimination of this problem please contact your server administrator."
The problem page is always indicated in the amount of one piece, but the address of this page changes: sometimes these are pages from one section, sometimes from another, sometimes there is no error at all. I can't see any pattern in its appearance, except that the URL changes) The site is on Joomla 3.x, gzip is disabled on the CMS side, the server is running nginx with gzip (level 3) and gzip_static on. The text/html content is always returned compressed by the server, regardless of whether the client supports gzip or not (after all, all clients in the world, including bots, already have this support).
According to the Yandex logs, the bot receives the corresponding pages without problems (it just can’t unpack - but why, it’s impossible to say, because Yandex itself does not store the details of the error - it didn’t work out to unpack everything). At the same time, for a human client, no problems arise in any browser for any pages (I test regularly in browserstack.com). I also send artificial requests to the server with Yandex.Bot headers (with which it accessed the problem page) - User-Agent: "Mozilla/5.0 (compatible; YandexBot/3.0; + yandex.com/bots) " Accept-Encoding: "gzip, deflate" - everything is also given in a bundle.
What could be the problem, comrades?