New install on TrueNAS, unable to get to management page

I am installing urbackup plugin on TrueNAS Core. I have gotten to the point where I click on manage but I get the following…

This site can’t be reached

Where do I go from here?

Try with this UrBackup Server doesn’t startup after update to 2.5.26_1 on TrueNAS (FreeBSD).

I assume this is via the shell? If so, do those lines get entered individually? Only asking as I don’t mess with stuff like that often. Also, I see text in red green and green, is that important?