JavaScript Assertions: I can't get the testing of the code to work

Tell us what’s happening:

I’ve tried to complete the challenge both with replit and with github and neither will pass.
I’ve even tried copying and pasting the solution given in the hint, and that won’t pass the tests either.
Is this challenge no longer operational?
Or am I doing something wrong in my replit or github setup?
Thanks!

Your project link(s)

solution: https://replit.com/@DavidCastefa/boilerplate-mochachai#tests/1_unit-tests.js

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.82 Safari/537.36.

Challenge: Learn How JavaScript Assertions Work

Link to the challenge:

you need to submit the live app link, and the app needs to be running

in replit the live app link is the one just above the preview

Do you mean this one?

yes, that is the live app link

I just tried it again with that link, and now it suddenly works!
Thanks a lot!

if you do not use the Live App link the tests are not able to communicate with your app