Niagara API - two versions, one doesn't work

When I use global search, some results returns pages with a weird addres, but it does work.
https://docs-origin.unrealengine.com…ter/index.html

Some results return address in different that doesn’t work…
http://api.unrealengine.com/INT/Blue…ter/index.html

Thanks for pointing this out! Our team is investigating what’s going on with the pages.

I visited both versions. Both of them do not works.