bug parameter filtr

[vlada83]

when i choose in param filter one option, modul works fine, after second choose, it shosw message no results, after 5 seconds is on page redirection and in place of param search module it is error page. See screen
Test on https://www.rafkarna.cz/eshop/zapletena-kola
Joomla 5, Phoca 5 beta
on Joomla 4 and Phoca 4 there was no problem, any idea?