Why does the search not work for a certain search query?

Question

1C-Bitrix

I noticed an interesting thing, the search on the site works, in all respects, the names search for products and display them, but as soon as I write the name of the manufacturer's brand in the search line (IB - in the index), the search does not display anything and moreover, in some place breaks the code - the footer of the page is not loaded ... Where can I see what's wrong? Thanks

Answer 1

In the web server error logs.