Dear all Getting below error, any fix for this? # apt update Hit:1 https://repo.zabbix.com/zabbix/6.4/ubuntu noble InRelease Hit:2 http://security.ubuntu.com/ubuntu noble-security InRelease Ign:3 https://download.ceph.com/debian-squid noble InRelease Err:4 https://download.ceph.com/debian-squid noble Release 404 Not Found [IP: 158.69.68.124 443] Hit:5 http://archive.ubuntu.com/ubuntu noble InRelease Hit:6 http://archive.ubuntu.com/ubuntu noble-updates InRelease Hit:7 http://archive.ubuntu.com/ubuntu noble-backports InRelease Reading package lists... Done E: The repository 'https://download.ceph.com/debian-squid noble 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 /etc/os-release PRETTY_NAME="Ubuntu 24.04.3 LTS" NAME="Ubuntu" VERSION_ID="24.04" VERSION="24.04.3 LTS (Noble Numbat)" VERSION_CODENAME=noble ID=ubuntu ID_LIKE=debian 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" UBUNTU_CODENAME=noble LOGO=ubuntu-logo # cat /etc/apt/sources.list.d/ceph.list deb https://download.ceph.com/debian-squid/ noble main Regards Dev