Cannot package for android

i wanted to try and make a little game for mobile and test it out
i have followed the messy asf documents for UE but some of it seems obsolete so that is an issue in itself…
after trawling various other forums noticing people complaining of the same problem, i have managed to get the sdk/ndk stuff all correct (i believe), accepted the sdk licenses etc…

but whenever i click package for android, UE does nothing but take me to a broken 404 link (super helpful).

is there any current documentation as to how to package for android on 4.26? or can someone help point me in the right direction plz