My default explorer has been blockchair, but the one you linked has a very clean UI and I was hopeful to be switching as i was a big fan of the summary Events/sec, Events/24hr, Mempool size stats.

But when I tried searching an empty bitcoin wallet on the site, it just gave me an error.
https://www.talkimg.com/images/2023/09/13/6MV71.png

for reference here is the working link on blockchair, and the non-working link on 3xpl.

Anyone have any ideas why this happens for empty wallets? Anything with a balance shows up correctly.