Jupyter Notebook doesn't work

Hi everyone.
I am having trouble getting JupyterNotebook to start up properly.
When I try to open JupyterNotebook , the following message is displayed.

How do I solve this problem?
Or do you know how to initialize JupyterNotebook?

What browser are you using?
Sorry, but I can’t read the language in your image, so I don’t know what the error messages are.

I use google chrome.
This image shows that 「This page can’t open
Error code 5」

Hey @mitemin,
Can you please ensure that you have an active subscription? If yes, then please contact Coursera, the instructions for which you can find here, and they will resolve the issue for you. I hope this helps.