Is my landing page URL correct ?

[superwarrior]

whats up @Tyoussef & all

is my landing page url correct ? cos when i enter the URL into browser its showing this error .

however when i add /index.html its showing fine .

do i need to add the /index.html when I insert the URL into the custom creative ? if i dont need to add /index.html then where did i go wrong in my setup ? ( i used tyoussef's method to host landing page