I have tried reloading this lab, different browsers, new tabs, all of the terminals show Connection Closed
I just tried now and it is working:
Labs - Ensure Immutability of Containers at Runtime - KodeKloud
Is it still not working for you?
Maybe try an in private (incognito) window and see if it lets you in.
I still see the issue. For both the last 2 labs in this course, the one mentioned & labs-use-audit-logs-to-monitor-access/