PPA not present for Ubuntu 18.10

[aplatypus]

This package repository was not found.

$  sudo add-apt-repository ppa:webupd8team/indicator-kdeconnect
Hit:9 http://au.archive.ubuntu.com/ubuntu cosmic-backports InRelease     
Err:10 http://ppa.launchpad.net/webupd8team/indicator-kdeconnect/ubuntu cosmic Release
  404  Not Found [IP: 91.189.95.83 80]
Reading package lists... Done
E: The repository 'http://ppa.launchpad.net/webupd8team/indicator-kdeconnect/ubuntu cosmic Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.

[b4j4]

Hi, Check for #49 and #126, webupd8team is not updating packages, so we need a new PPA maintainer.

But Check this comment, may help you

[aplatypus]

I keep getting that too -- I have uninstalled and loaded KDE Connect and KDE Connect Indicator from the flatpak. That seems to be working OK (so far so good).