[sane-devel] error messages from add-apt-repository sane-release

[Perry Hutchison]

In attempting to add the sane-release repository, I got a 404 error
and subsequently a "... disabled by default." message.  Did I do
something wrong?

$ sudo add-apt-repository https://launchpad.net/~sane-project/+archive/ubuntu/sane-release
Hit:1 http://us.archive.ubuntu.com/ubuntu bionic InRelease
Get:2 http://us.archive.ubuntu.com/ubuntu bionic-updates InRelease [88.7 kB]   
Get:3 http://security.ubuntu.com/ubuntu bionic-security InRelease [88.7 kB]    
Ign:4 https://launchpad.net/~sane-project/+archive/ubuntu/sane-release bionic InRelease
Err:5 https://launchpad.net/~sane-project/+archive/ubuntu/sane-release bionic Release
  404  Not Found [IP: 91.189.89.222 443]
Get:6 http://us.archive.ubuntu.com/ubuntu bionic-backports InRelease [74.6 kB] 
Get:7 http://security.ubuntu.com/ubuntu bionic-security/main amd64 DEP-11 Metadata [48.5 kB]
Get:8 http://security.ubuntu.com/ubuntu bionic-security/universe amd64 DEP-11 Metadata [60.3 kB]
Get:9 http://us.archive.ubuntu.com/ubuntu bionic-updates/main i386 Packages [1,288 kB]
Get:10 http://security.ubuntu.com/ubuntu bionic-security/multiverse amd64 DEP-11 Metadata [2,464 B]
Get:11 http://us.archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages [2,070 kB]
Get:12 http://us.archive.ubuntu.com/ubuntu bionic-updates/main amd64 DEP-11 Metadata [294 kB]
Get:13 http://us.archive.ubuntu.com/ubuntu bionic-updates/universe amd64 Packages [1,735 kB]
Get:14 http://us.archive.ubuntu.com/ubuntu bionic-updates/universe i386 Packages [1,567 kB]
Get:15 http://us.archive.ubuntu.com/ubuntu bionic-updates/universe amd64 DEP-11 Metadata [290 kB]
Get:16 http://us.archive.ubuntu.com/ubuntu bionic-updates/multiverse amd64 DEP-11 Metadata [2,468 B]
Get:17 http://us.archive.ubuntu.com/ubuntu bionic-backports/universe amd64 DEP-11 Metadata [9,288 B]
Reading package lists... Done                                                  
E: The repository 'https://launchpad.net/~sane-project/+archive/ubuntu/sane-release 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.

$ cat /usr/lib/os-release
NAME="Ubuntu"
VERSION="18.04.5 LTS (Bionic Beaver)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 18.04.5 LTS"
VERSION_ID="18.04"
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=bionic
UBUNTU_CODENAME=bionic