1

I am trying to run sudo apt-get update and running in these kinds of errors.

N: Ignoring file 'libjpeg8_8c-2ubuntu8_amd64.deb' in directory '/etc/apt/sources.list.d/' as it has an invalid filename extension
N: Ignoring file 'libdouble-conversion1_3.1.0-3_amd64.deb' in directory '/etc/apt/sources.list.d/' as it has an invalid filename extension
N: Ignoring file 'libjpeg-turbo8_2.0.3-0ubuntu1_amd64.deb' in directory '/etc/apt/sources.list.d/' as it has an invalid filename extension
E: The repository 'http://ppa.launchpad.net/danielrichter2007/grub-customizer/ubuntu focal 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.
Kulfy
  • 17,696

1 Answers1

3

You can go and remove these deb files in /etc/apt/sources.list.d directory. Open your terminal and run this command:

sudo rm /etc/apt/sources.list.d/*.deb
Kulfy
  • 17,696