Tt-rss says "Specified URL doesn't seem to contain any feeds."

I am the owner of site mazzy.ru.
I want to make a correct rss and I want to make a correct <link rel=“alternate”…> on the site.
I passed the validation https://validator.w3.org/feed/check.cgi?url=mazzy.ru
feedly and inoreader find and add feed from site mazzy.ru successfully.
tt-rss works great with a direct link MaSCA

however, tt-rss says “Specified URL doesn’t seem to contain any feeds.” when I use ‘mazzy.ru’ as URL for the ‘subscribe to feed’.

please tell me what I need to fix so tt-rss can recognize and add a feed using mazzy.ru?
thanks

here’s the actual error message (it happens when tt-rss is trying to extract feeds from your html document via libxml, function get_feeds_from_html):

06BRZkUh

i’m honestly not sure what’s the deal with body element is, your markup looks correct to me.

my guess would be tt-rss using this weird xml preamble prefix hack (at functions.php:2118) breaks things.

this https://git.tt-rss.org/fox/tt-rss/commit/6d746453c75e2c482458f687585ef436a28a9888 removes the aforementioned preamble hack.

‘Curiouser and curiouser!’. thanks.