search_after/before_date_filter parameter doesn't work

[carefreelife98]

When I include one or both of search_after_date_filter / search_before_date_filter parameter in request, it doesn't response any search result.
It occurs same with your playground. (https://docs.perplexity.ai/api-reference/search-post?playground=open)

please check it for me, Thank you :)