Cannot start the task

I am shown:
Please wait while the test environment is setup. It may take up to 5 minutes.

Connecting to Nautilus Environment ...
A few more minutes ...

But it is been more than 30 minutes and tried to refresh but doesn’t work

Hello,

Please try to clear your browser’s cache and try again.

It worked today without doing anything. Will keep your comment in mind the next time it doesn’t work.
Thanks!