Comment 10 for bug 1771914

I have tested the proposed packages as below:
  ii python3-update-manager 1:18.04.11.3 all python 3.x module for update-manager
  ii update-manager-core 1:18.04.11.3 all manage release upgrades

Before applying the new packages, the below command reports:

$ /usr/lib/ubuntu-release-upgrader/check-new-release
Checking for a new Ubuntu release
Failed to connect to https://changelogs.ubuntu.com/meta-release-lts. Check your Internet connection or proxy settings
No new release found.

After applying the patch, it says:

$ /usr/lib/ubuntu-release-upgrader/check-new-release
Checking for a new Ubuntu release
No new release found.

There is no error message anymore. It seems the patch works.