Learn Bash Scripting By Building Five Programs

Hello people,
I’ve been trying to access Learn Bash Scripting By Building Five Programs, but I got only the editor, and I can’t start the course, as you can see in the screenshot taken right now.

I’ve already logged out and even tried on another PC, but I can’t continue in the course.
Any suggestion, please?

BTW: playing around with the editor, I’ve noticed the plugin installed. So I’ve tried to start it manually, but I got this:

Now it’s working correctly.