Problem with permalink

I’ve just finished installing a new blog but I got this problem with the inner links
https://www.learnhow.ws/http:/www.learnhow.ws/category1/topic-title/
as you can see the site url appears twice
I’ve already tried to deactivate all the plugins and also tried to go back to the default theme but still have the same problem
if anyone knows how to fix this please help!