An extra closing div pops up on the Bitrix combat site, how to fix it?

Question

1C-Bitrix

The bottom line is, on the test server I checked, there are no extra closing divs and everything works stably, as soon as I touched the bug on the combat one, oddly enough it turned out (checked once again on the validator), what could be the problem?

Answer 1

Check in the header / footer of the site on a blank page.
If everything is OK, then you try to connect the rest of the components on the page.
Perhaps somewhere else in the included area file, when editing, it was lost.