It was working fine last night but I had to reload the lab and after that I’ve been unable to load it up successfully. It takes forever then I get the screen saying “Uh oh! Something went wrong” I click Try Again, then refresh the page and same thing happens again. I have tried multiple times using both Chrome and FireFox with the same result.
I completed 8 out of the 9 task. The 9th was basically enabling ip_forward so I clicked on Mark as Complete and that allowed me to continue to the next topic.
Try an in-private browser session or clearing you cache and cookies.