Unable to Run code and submit it

I am unable to submit test, in output window it is showing message running test. it is not going ahead of that. please if anybody is aware please help me out

Your code so far


<h2>CatPhotoApp</h2>
<main>
<p>Kitty ipsum dolor sit amet, shed everywhere shed everywhere stretching attack your ankles chase the red dot, hairball run catnip eat the grass sniff.</p>
<p>Purr jump eat the grass rip the couch scratched sunbathe, shed everywhere rip the couch sleep in the sink fluffy fur catnip scratched</p>
</main>

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.181 Safari/537.36.

Link to the challenge:
https://learn.freecodecamp.org/responsive-web-design/basic-html-and-html5/introduction-to-html5-elements/

Many of us are facing this issue. This has been confirmed as a bug and the freeCodeCamp team seems to be working on it. Some suggest that refreshing the page several times sometimes help but I had no success so far.

it is working for my office laptop, but my personal laptop it is not working