Ign:8 http://ppa.launchpad.net/mpstark/elementary-tweaks-daily/ubuntu bionic InRelease
Hit:10 http://ppa.launchpad.net/elementary-os/os-patches/ubuntu bionic InRelease    
Get:11 http://in.archive.ubuntu.com/ubuntu bionic-backports InRelease [74.6 kB]     
Hit:12 http://ppa.launchpad.net/philip.scott/elementary-tweaks/ubuntu bionic InRelease
Err:13 http://ppa.launchpad.net/mpstark/elementary-tweaks-daily/ubuntu bionic Release
  404  Not Found [IP: 80]
Reading package lists... Done                      
E: The repository 'http://ppa.launchpad.net/mpstark/elementary-tweaks-daily/ubuntu bionic 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.

  • I would not recommend installing elementary-tweaks. Last time I checked it is outdated. An outdated package can break your system. – Hasan May 23 at 8:54

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