This is probably caused by a repos not correctly configured.
I don't know your system versioning etc. (You seem to be posting in this thread - so I guess you are in the PVE8to9 upgrade process?).
Could you show output for the following.
Code:
pveversion -v
grep '' /etc/apt/sources.list* /etc/apt/sources.list.d/*
Yes trying to upgrade from 8.4 to 9, here is the results of the command.
root@pve:~# pveversion -v
grep '' /etc/apt/sources.list* /etc/apt/sources.list.d/*
proxmox-ve: 8.4.0 (running kernel: 6.8.12-15-pve)
pve-manager: 8.4.13 (running version: 8.4.13/5b08ebc2823dd9cb)
proxmox-kernel-helper: 8.1.4
proxmox-kernel-6.8: 6.8.12-15
proxmox-kernel-6.8.12-15-pve-signed: 6.8.12-15
proxmox-kernel-6.8.12-13-pve-signed: 6.8.12-13
proxmox-kernel-6.8.12-11-pve-signed: 6.8.12-11
proxmox-kernel-6.8.12-10-pve-signed: 6.8.12-10
proxmox-kernel-6.8.12-4-pve-signed: 6.8.12-4
ceph-fuse: 17.2.7-pve3
corosync: 3.1.9-pve1
criu: 3.17.1-2+deb12u2
glusterfs-client: 10.3-5
ifupdown2: 3.2.0-1+pmx11
intel-microcode: 3.20250512.1~deb12u1
ksm-control-daemon: 1.5-1
libjs-extjs: 7.0.0-5
libknet1: 1.30-pve2
libproxmox-acme-perl: 1.6.0
libproxmox-backup-qemu0: 1.5.2
libproxmox-rs-perl: 0.3.5
libpve-access-control: 8.2.2
libpve-apiclient-perl: 3.3.2
libpve-cluster-api-perl: 8.1.2
libpve-cluster-perl: 8.1.2
libpve-common-perl: 8.3.4
libpve-guest-common-perl: 5.2.2
libpve-http-server-perl: 5.2.2
libpve-network-perl: 0.11.2
libpve-rs-perl: 0.9.4
libpve-storage-perl: 8.3.7
libspice-server1: 0.15.1-1
lvm2: 2.03.16-2
lxc-pve: 6.0.0-1
lxcfs: 6.0.0-pve2
novnc-pve: 1.6.0-2
proxmox-backup-client: 3.4.6-1
proxmox-backup-file-restore: 3.4.6-1
proxmox-backup-restore-image: 0.7.0
proxmox-firewall: 0.7.1
proxmox-kernel-helper: 8.1.4
proxmox-mail-forward: 0.3.3
proxmox-mini-journalreader: 1.5
proxmox-offline-mirror-helper: 0.6.7
proxmox-widget-toolkit: 4.3.13
pve-cluster: 8.1.2
pve-container: 5.3.2
pve-docs: 8.4.1
pve-edk2-firmware: 4.2025.02-4~bpo12+1
pve-esxi-import-tools: 0.7.4
pve-firewall: 5.1.2
pve-firmware: 3.16-3
pve-ha-manager: 4.0.7
pve-i18n: 3.4.5
pve-qemu-kvm: 9.2.0-7
pve-xtermjs: 5.5.0-2
qemu-server: 8.4.3
smartmontools: 7.3-pve1
spiceterm: 3.3.0
swtpm: 0.8.0+pve1
vncterm: 1.8.0
zfsutils-linux: 2.2.8-pve1
/etc/apt/sources.list:deb
http://deb.debian.org/debian trixie main contrib non-free-firmware
/etc/apt/sources.list:deb
http://deb.debian.org/debian trixie-updates main contrib non-free-firmware
/etc/apt/sources.list:deb
http://security.debian.org/debian-security trixie-security main contrib non-free-firmware
grep: /etc/apt/sources.list.d: Is a directory
/etc/apt/sources.list.d/ceph.sources:Types: deb
/etc/apt/sources.list.d/ceph.sources:URIs:
http://download.proxmox.com/debian/ceph-squid
/etc/apt/sources.list.d/ceph.sources:Suites: trixie
/etc/apt/sources.list.d/ceph.sources:Components: no-subscription
/etc/apt/sources.list.d/ceph.sources:Signed-By: /usr/share/keyrings/proxmox-archive-keyring.gpg
/etc/apt/sources.list.d/pmg-enterprise.list:# deb
https://enterprise.proxmox.com/debian/pmg bookworm pmg-enterprise
/etc/apt/sources.list.d/pmg-install-repo.list:#deb
http://download.proxmox.com/debian/pmg bookworm pmg-no-subscription
/etc/apt/sources.list.d/pmgtest-for-beta.list:# deb
http://download.proxmox.com/debian/pmg bookworm pmgtest
/etc/apt/sources.list.d/pve-enterprise.list:# deb
https://enterprise.proxmox.com/debian/pve trixie pve-enterprise
/etc/apt/sources.list.d/pve-enterprise.list:
/etc/apt/sources.list.d/pve-install-repo.list:#deb
http://download.proxmox.com/debian/pve bookworm pve-no-subscription
/etc/apt/sources.list.d/pvetest-for-beta.list:# deb
http://download.proxmox.com/debian/pve bookworm pvetest
root@pve:~# ^C
root@pve:~#