In umi.cms, when outputting %catalog getSmartFilters()%, the page is constantly updated, how to solve?

Question

XSL & XSLT

Hello. everyone!
Integrating layout into Umi.cms is difficult, because for the first time.
The essence of the problem, I added the following code to default.xsl

<xsl:apply-templates select="document('udata://catalog/getSmartFilters//45/0/1')/udata"/>

the filter began to be displayed, but
after adding this line, my browser constantly updates the page, what could be the reason for this? who has experienced this before?