The product filter in the bitrix site catalog has stopped working, what could be the problem?

Question

1C-Bitrix

The filter of products in the catalog has stopped working - it always turns the waiting wheel and does not filter. What could be the reason?

Answer 1

and really a million
1. bxajax - does not work at the first error in js, in fact, like the usual one
2. htaccess - 301 for all get parameters
yes, there are really a million of them, tell me what did you do at least, what site?

Answer 2

I had this when they removed the slashes at the end of the URL through a 301 redirect in htaccess.