xr-hardware install

(my user's name)@(my user's name)-pc:~$ sudo add-apt-repository ppa:monado-xr/monado
[sudo] password for (my user's name):
PPA publishes dbgsym, you may need to include 'main/debug' component
Repository: 'deb http://ppa.launchpad.net/monado-xr/monado/ubuntu/ impish main'
Description:
Packages of the Monado XR software system that correspond to (intended) uploads to Debian. See https://monado.freedesktop.org/getting-started.html

For highly-experimental continuous builds: see https://monado.freedesktop.org/packages-ubuntu.html
More info: https://launchpad.net/~monado-xr/+archive/ubuntu/monado
Adding repository.
Press [ENTER] to continue or Ctrl-c to cancel.
Found existing deb entry in /etc/apt/sources.list.d/monado-xr-ubuntu-monado-impish.list
Adding deb entry to /etc/apt/sources.list.d/monado-xr-ubuntu-monado-impish.list
Found existing deb-src entry in /etc/apt/sources.list.d/monado-xr-ubuntu-monado-impish.list
Adding disabled deb-src entry to /etc/apt/sources.list.d/monado-xr-ubuntu-monado-impish.list
Adding key to /etc/apt/trusted.gpg.d/monado-xr-ubuntu-monado.gpg with fingerprint 5A6166F945641E7AC11907E00D8B4D5E07191FA9
Hit:1 http://gb.archive.ubuntu.com/ubuntu impish InRelease
Hit:2 http://gb.archive.ubuntu.com/ubuntu impish-updates InRelease
Hit:3 http://gb.archive.ubuntu.com/ubuntu impish-backports InRelease
Ign:4 http://ppa.launchpad.net/frinksy/airshipper/ubuntu impish InRelease
Ign:5 http://ppa.launchpad.net/gezakovacs/ppa/ubuntu impish InRelease
Hit:6 https://download.docker.com/linux/ubuntu impish InRelease
Hit:7 https://dl.winehq.org/wine-builds/ubuntu impish InRelease
Hit:8 https://brave-browser-apt-release.s3.brave.com stable InRelease
Hit:9 http://ppa.launchpad.net/linuxuprising/java/ubuntu impish InRelease
Hit:10 http://ppa.launchpad.net/lutris-team/lutris/ubuntu impish InRelease
Hit:11 https://packages.microsoft.com/repos/ms-teams stable InRelease
Hit:12 http://ppa.launchpad.net/monado-xr/monado/ubuntu impish InRelease
Hit:13 http://security.ubuntu.com/ubuntu impish-security InRelease
Hit:14 http://ppa.launchpad.net/oibaf/graphics-drivers/ubuntu impish InRelease
Ign:15 http://ppa.launchpad.net/tualatrix/ppa/ubuntu impish InRelease
Hit:16 https://repo.radeon.com/amdgpu/21.40.1/ubuntu focal InRelease
Err:17 http://ppa.launchpad.net/frinksy/airshipper/ubuntu impish Release
  404  Not Found [IP: 91.189.95.85 80]
Err:18 http://ppa.launchpad.net/gezakovacs/ppa/ubuntu impish Release
  404  Not Found [IP: 91.189.95.85 80]
Hit:19 https://repo.radeon.com/rocm/apt/4.5.1 ubuntu InRelease
Err:20 http://ppa.launchpad.net/tualatrix/ppa/ubuntu impish Release
  404  Not Found [IP: 91.189.95.85 80]
Reading package lists... Done
E: The repository 'http://ppa.launchpad.net/frinksy/airshipper/ubuntu impish 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.
E: The repository 'http://ppa.launchpad.net/gezakovacs/ppa/ubuntu impish 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.
E: The repository 'http://ppa.launchpad.net/tualatrix/ppa/ubuntu impish 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.