I can not set up an SSL certificate, as my code does not function or direct to it

It looks like once I've deployed the files the SSL stopped working. It also seems that the .htaccess file isn't functioning. Are there any redirects in the code itself?

I cannot set up an SSL certificate, as my code does not function or direct to it - kindly find the problem how I should correct this?

I am learning to be a very sharp developer, however I am not yet. I hope you kindly help me in checking up some of my code inside of my repository: https://github.com/jackruless/arabicnews-github.io/, (which indicates that some entries inside my website's code forces the website to load with HTTP instead of HTTPS, which I can not set up SSLwell for my domain www.arab999.com. I can not find out which script I made give the problem - could you please kindly help check it out, then give instruction - I will be grateful!