V2 does not load on localhost 3000

not sure why, but while this page does load online , it does no longer load on localhost 3000

okay, this might happen because V2 is loaded via SSL while my localhost is on http protocol .
It used to work though. And I changed nothing I am aware of on my end.

My SSL assumption prooved to be wrong. It must be something else.

I already lost too much time today. . I will ignore it for now.

http://skysails-power.com.w00edd9f.kasserver.com/anymod-test.html
user: sky
pass: power

allow localhost was not enough. I had to add LOCALHOST to make it work .

No Idea why, I did not investigate