See
The original search term "홍갓" refers to a local vegetable's name in Korea. However, the search results include multiple entries about the term "null".
Interestingly, if I copy the link via "Share This Search", I got https://kagi.com/search?q=%ED%99%8D%EA%B0%93&r=no_region&sh=aCR8M_T0nGE3LH2IIE60Zg, which doesn't have this problem when viewed from an incognito browser window. So I suspect it may have something to do with my config or personalization. Nevertheless, this still seems to be a bug to me.
I expect the results to be related to "홍갓" only.