Hi, I got the same error. However, I was able to complete the tasks on my own. All I did, I tried to solve all tasks given in the instructions at once (even the ones that were not highlighted at the moment) and only then pressed “Run.” It worked for me. But there is definitely something wrong with that.
I honestly am receiving the same data. I tried it on Google Chrome, Mozilla Firefox, Microsoft Edge, and Microsoft Internet Explorer receiving the same message “No response received from browser”. I was not able to use Learn Responsive Design course and I was very ungrateful for that
The best thing to do is to try running it a few times. After two or three times of running it, it should give you a green check mark. First it should say No response received from web browser. Then it after it should say $expect is not defined. It does that for most lessons and I don’t know why.
I’m not seeing the web browser populate for my course using Chrome. In place I’m seeing a "k5l3brfcbul2t3fjpv1rso5ebvtr0nbbcl2i6g7eevpklobdeksg.codecademy.cloud’s server DNS address could not be found. " error.