Why does Jenkins say “This Jenkins instance appears to be offline”

Question

I have a fresh install of Jenkins 2.32.2 on Ubuntu. Opened a browser on the instance and get to a page titled Offline, with the message \"This Jenki

Answer 1

On MacOS: 10.11.6

Step-1: Go to /Users//.jenkins

Step-2: Open the file: hudson.model.UpdateCenter.xml

Step-3: CHange the value of "default" from "https://xxx" to "http://xxx"