Searching for modx revo msearch does not find anything. What's the trouble?

Question

MODX

Hello. There was a problem with mSearch (that's right, not mSearch2).
There is a structure like this:

[[!pdoPage?
  &elementClass=`modSnippet` 
  &element=`pdoResources`
  &parents=`12`
  &resources=`[[!mSearch? &templates=`4` &returnIds=`1`]]`
  &tpl=`post-in-grid`
  &limit=`4`
  &showHidden=`1`
  &tplPageWrapper=`@INLINE [[+first]][[+prev]][[+pages]][[+next]][[+last]]`
  &tplPage=`@INLINE <a class="page-numbers" href="[[+href]]">[[+pageNo]]</a>`
  &tplPageActive=`@INLINE <a class="page-numbers current" href="[[+href]]">[[+pageNo]]</a>`
  &tplPageFirst=``
  &tplPageLast=``
  &tplPagePrev=`@INLINE <a class="page-numbers prev" href="[[+href]]">НАЗАД</a>`
  &tplPageNext=`@INLINE <a class="page-numbers next" href="[[+href]]">ВПЕРЕД</a>`
  &tplPageFirstEmpty=``
  &tplPageLastEmpty=``
  &tplPagePrevEmpty=``
  &tplPageNextEmpty=``
  &sortby=`{"id":"DESC"}`
  &includeContent=`1`
  &includeTVs=`image-post`
  &processTVs=`1`
  &depth=`10`
  &hideContainers=`1`
  &pageNavVar=`page.nav`
  &pageLinkScheme=`/[[+pageVarKey]]-[[+page]]`
]]

As a result, [[+total]] says that 2 results were found, but [[+mse.error]] says that nothing was found at all. Has anyone encountered a similar problem?