Markdown not getting rendered in blog

Hello @hamelsmu
The markdown content when I write within $$ for subscript or superscript in equations is not getting rendered. It was getting rendered previously, like 2 months ago. But then when I tried to make some changes the jekyll build failed. So I forked again from the main repo and re-created my blog 10 days ago.
And since then, I am facing this issue of text in $$. Let me know if you can do something about it.

Thank you.

Please follow the troubleshooting guide carefully and follow all the steps as well as provide all of the requested information: https://github.com/fastai/fastpages/blob/master/_fastpages_docs/TROUBLESHOOTING.md