I'm pretty new to ubuntu. Trying to run sudo apt-get update I receive the following error:
Ign:1 h.ttp://dl.google.com/linux/chrome/deb stable InRelease
Hit:2 h.ttp://dl.google.com/linux/chrome/deb stable Release
Ign:3 ttp://ppa.launchpad.net/mjblenner/ppa-hal/ubuntu bionic InRelease
Err:4 ttp://ppa.launchpad.net/mjblenner/ppa-hal/ubuntu bionic Release
404 Not Found [IP: 91.189.95.83 80]
Hit:6 ttp://security.ubuntu.com/ubuntu bionic-security InRelease
Hit:7 http://us.archive.ubuntu.com/ubuntu bionic InRelease
Hit:8 http://us.archive.ubuntu.com/ubuntu bionic-updates InRelease
Get:9 http://us.archive.ubuntu.com/ubuntu bionic-backports InRelease [74.6 kB]
Reading package lists... Done
E: The repository 'http://ppa.launchpad.net/mjblenner/ppa-hal/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.
Any ideas?
