Unable to submit Test

Tell us what’s happening:

Your code so far

<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>

After clicking Run the tests on Output window only “//Running test” is displayed so unable to submit test.

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:

Try hitting CMD + Enter (CTRL + Enter on Windows) and see if the exercise works then.

Sir, CMD is which key. please i am unaware about it.

Sir, I hit CTRL + ENTER key but not working but working on my office laptop, but not working on my personal laptop.