Lookup of English "today"

https://www.binisaya.com/node/21?search=english&word=today&Search=Search

creates a reverse-lookup link: https://www.binisaya.com/cebuano/karong%20adlawa

But that link shows:

Page not found

The requested page could not be found.

A link which works would be: https://www.binisaya.com/cebuano/karong+adlawa

Then the question is whether it is encoding or decoding bug. https://stackoverflow.com/a/29948396/2995591 says it is decoding bug.