Hi Krishna,
Please refresh the Page using CTRL+F5 or close the notebook and open again.
If you still face the same issue, please take the screenshot and share with us.
That would be great to understand the issue.

Hope this helps.
Thanks

I am getting a general error that Page is not available

Hi Krishna,
Thanks for your information.
I am facing the same issue. Please give us sometime to fix it.
We appreciate your patience in this regard.
Thanks.