Why could the price range disappear from the Smart Filter?

Question

1C-Bitrix

Strangely, the price range in the Smart Filter suddenly disappeared: all other properties are in place, and it is the prices that are missing. I checked the variables in the template code:

$arResult["ITEMS"][...]["VALUES"]["MAX"]["VALUE"]

and, accordingly, "MIN", - both are absent. I can’t remember what irreparable was done, that the prices disappeared, but everything seems to be in order with the component settings. With the template too: I checked it by copying the template from the working version of the site. If anyone has suggestions about the possible cause of the error, I will be glad to know about them.