Web GUI unavailable

techjunky · Saturday at 16:31

okay... for now ill keep waiting till someone else has a possible solution to the problem

Impact · Saturday at 16:32

I suppose you can check these but it's bit of a throwing stuff at the wall seeing what sticks kind of thing.

Bash:

apt clean && apt update && apt dist-upgrade
apt install proxmox-widget-toolkit pve-manager
apt policy proxmox-widget-toolkit

techjunky · Saturday at 16:35

The results of the 3 mentioned commands:

Bash:

root@pve:~# apt clean && apt update && apt dist-upgrade
Hit:1 http://security.debian.org bookworm-security InRelease
Hit:2 http://ftp.nl.debian.org/debian bookworm InRelease
Hit:3 http://ftp.nl.debian.org/debian bookworm-updates InRelease
Hit:4 http://download.proxmox.com/debian/pve bookworm InRelease
Hit:5 http://download.proxmox.com/debian/ceph-reef bookworm InRelease
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
All packages are up to date.
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Calculating upgrade... Done
The following packages were automatically installed and are no longer required:
  libfmt7 libthrift-0.13.0
Use 'apt autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
root@pve:~# apt install proxmox-widget-toolkit pve-manager
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
proxmox-widget-toolkit is already the newest version (5.1.5).
pve-manager is already the newest version (8.4.16).
The following packages were automatically installed and are no longer required:
  libfmt7 libthrift-0.13.0
Use 'apt autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
root@pve:~# apt policy proxmox-widget-toolkit
proxmox-widget-toolkit:
  Installed: 5.1.5
  Candidate: 5.1.5
  Version table:
 *** 5.1.5 100
        100 /var/lib/dpkg/status
     4.3.13 500
        500 http://download.proxmox.com/debian/pve bookworm/pve-no-subscription amd64 Packages
     4.3.12 500
        500 http://download.proxmox.com/debian/pve bookworm/pve-no-subscription amd64 Packages
     4.3.11 500
        500 http://download.proxmox.com/debian/pve bookworm/pve-no-subscription amd64 Packages
     4.3.10 500
        500 http://download.proxmox.com/debian/pve bookworm/pve-no-subscription amd64 Packages
     4.3.9 500
        500 http://download.proxmox.com/debian/pve bookworm/pve-no-subscription amd64 Packages
     4.3.8 500
        500 http://download.proxmox.com/debian/pve bookworm/pve-no-subscription amd64 Packages
     4.3.7 500
        500 http://download.proxmox.com/debian/pve bookworm/pve-no-subscription amd64 Packages
     4.3.6 500
        500 http://download.proxmox.com/debian/pve bookworm/pve-no-subscription amd64 Packages
     4.3.4 500
        500 http://download.proxmox.com/debian/pve bookworm/pve-no-subscription amd64 Packages
     4.3.3 500
        500 http://download.proxmox.com/debian/pve bookworm/pve-no-subscription amd64 Packages
     4.3.2 500
        500 http://download.proxmox.com/debian/pve bookworm/pve-no-subscription amd64 Packages
     4.3.1 500
        500 http://download.proxmox.com/debian/pve bookworm/pve-no-subscription amd64 Packages
     4.3.0 500
        500 http://download.proxmox.com/debian/pve bookworm/pve-no-subscription amd64 Packages
     4.2.4 500
        500 http://download.proxmox.com/debian/pve bookworm/pve-no-subscription amd64 Packages
     4.2.3 500
        500 http://download.proxmox.com/debian/pve bookworm/pve-no-subscription amd64 Packages
     4.2.2 500
        500 http://download.proxmox.com/debian/pve bookworm/pve-no-subscription amd64 Packages
     4.2.1 500
        500 http://download.proxmox.com/debian/pve bookworm/pve-no-subscription amd64 Packages
     4.2.0 500
        500 http://download.proxmox.com/debian/pve bookworm/pve-no-subscription amd64 Packages
     4.1.5 500
        500 http://download.proxmox.com/debian/pve bookworm/pve-no-subscription amd64 Packages
     4.1.4 500
        500 http://download.proxmox.com/debian/pve bookworm/pve-no-subscription amd64 Packages
     4.1.3 500
        500 http://download.proxmox.com/debian/pve bookworm/pve-no-subscription amd64 Packages
     4.1.1 500
        500 http://download.proxmox.com/debian/pve bookworm/pve-no-subscription amd64 Packages
     4.1.0 500
        500 http://download.proxmox.com/debian/pve bookworm/pve-no-subscription amd64 Packages
     4.0.9 500
        500 http://download.proxmox.com/debian/pve bookworm/pve-no-subscription amd64 Packages
     4.0.8 500
        500 http://download.proxmox.com/debian/pve bookworm/pve-no-subscription amd64 Packages
     4.0.7 500
        500 http://download.proxmox.com/debian/pve bookworm/pve-no-subscription amd64 Packages
     4.0.6 500
        500 http://download.proxmox.com/debian/pve bookworm/pve-no-subscription amd64 Packages
     4.0.5 500
        500 http://download.proxmox.com/debian/pve bookworm/pve-no-subscription amd64 Packages
     4.0.4 500
        500 http://download.proxmox.com/debian/pve bookworm/pve-no-subscription amd64 Packages
     4.0.3 500
        500 http://download.proxmox.com/debian/pve bookworm/pve-no-subscription amd64 Packages
root@pve:~#

Impact · Saturday at 16:47

That looks as if you installed proxmox-widget-toolkit from outside of the repos. The 5.1.5 version is not provided in the bookworm ones.
You can downgrade it but we'd have to kind of look at all the other packages too and this thread has become very off topic as is already.

techjunky · Saturday at 16:49

Impact said:
You can downgrade it

How do I downgrade it? Would be happy to try

Impact · Saturday at 16:50

Try apt install --allow-downgrades proxmox-widget-toolkit.

techjunky · Saturday at 16:51

Gives this error

Bash:

root@pve:~# apt install --allow-downgrade proxmox-widget-toolkit
E: Command line option --allow-downgrade is not understood in combination with the other options

Impact · Saturday at 16:52

Sorry, I forgot the s. I edited above.

janus57 · Saturday at 16:53

Hi,

The 5.1.5 version come from Trixie (== PVE9) are you sur you have not misconfigured your APT repository at some point ?

Could you give the result of pveversion -v ?

Best regards

Impact · Saturday at 16:54

They have trixie in /etc/apt/sources.list.d/proxmox.sources so very likely. It's disabled though.

techjunky · Saturday at 16:54

Impact said:
Sorry, I forgot the s. I edited above.

Bash:

root@pve:~# apt install --allow-downgrades proxmox-widget-toolkit
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
proxmox-widget-toolkit is already the newest version (5.1.5).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

janus57 said:
result of pveversion -v

Bash:

root@pve:~# pveversion -v
proxmox-ve: 8.4.0 (running kernel: 6.8.12-17-pve)
pve-manager: 8.4.16 (running version: 8.4.16/368e3c45c15b895c)
proxmox-kernel-helper: 9.0.4
pve-kernel-5.15: 7.3-3
proxmox-kernel-6.17.4-2-pve-signed: 6.17.4-2
proxmox-kernel-6.17: 6.17.4-2
proxmox-kernel-6.8: 6.8.12-17
proxmox-kernel-6.8.12-17-pve-signed: 6.8.12-17
pve-kernel-5.15.102-1-pve: 5.15.102-1
ceph: 18.2.7-pve1
ceph-fuse: 18.2.7-pve1
corosync: 3.1.9-pve1
criu: 3.17.1-2+deb12u2
glusterfs-client: 10.3-5
ifupdown2: 3.3.0-1+pmx11
ksm-control-daemon: 1.5-1
libjs-extjs: 7.0.0-5
libknet1: 1.30-pve2
libproxmox-acme-perl: 1.7.0
libproxmox-backup-qemu0: 1.5.2
libproxmox-rs-perl: 0.3.5
libpve-access-control: 8.2.2
libpve-apiclient-perl: 3.4.2
libpve-cluster-api-perl: 8.1.2
libpve-cluster-perl: 8.1.2
libpve-common-perl: 8.3.6
libpve-guest-common-perl: 5.2.2
libpve-http-server-perl: 5.2.2
libpve-network-perl: 0.11.3
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: 6.0.0-2
lxcfs: 6.0.0-pve2
novnc-pve: 1.6.0-3
proxmox-backup-client: 3.4.7-1
proxmox-backup-file-restore: 3.4.7-1
proxmox-backup-restore-image: 0.7.0
proxmox-firewall: 0.7.1
proxmox-kernel-helper: 9.0.4
proxmox-mail-forward: 0.3.3
proxmox-mini-journalreader: 1.5
proxmox-widget-toolkit: 5.1.5
pve-cluster: 8.1.2
pve-container: 5.3.3
pve-docs: 9.1.2
pve-edk2-firmware: 4.2025.05-2
pve-esxi-import-tools: 0.7.4
pve-firewall: 5.1.2
pve-firmware: 3.17-2
pve-ha-manager: 4.0.7
pve-i18n: 3.6.6
pve-qemu-kvm: 9.2.0-7
pve-xtermjs: 5.5.0-3
qemu-server: 8.4.5
smartmontools: 7.3-pve1
spiceterm: 3.3.1
swtpm: 0.8.0+pve1
vncterm: 1.8.1
zfsutils-linux: 2.2.8-pve1
root@pve:~#

Impact · Saturday at 16:56

Might have to be explicit then

Code:

apt install --allow-downgrades proxmox-widget-toolkit=4.3.13

It seems some of your packages are partially upgraded to trixie through so at this point I'd recommend just fully upgrading to trixie or reinstalling.

techjunky · Saturday at 16:58

Impact said:
Might have to be explicit then

Code:

apt install --allow-downgrades proxmox-widget-toolkit=4.3.13

It seems some of your packages are partially upgraded to trixie through so at this point I'd recommend just fully upgrading to trixie or reinstalling.

MY HERO!!! After I installed this, my Web GUI finally came back to life!!!!

janus57 · Saturday at 17:04

Hi,

You still risk having other problems; you have other packages which are in the Trixie version.

Best regards,

techjunky · Saturday at 17:05

janus57 said:
you have other packages which are in the Trixie version.

and how do I resolve those?

bbgeek17 · 2026-01-11T04:08:38+0100

Proxmox 8 is based on Debian 12 Bookworm. PVE 9 is based on Debian 13 Trixie.
You should not be running PVE8 on Deb13, or PVE9 on Deb12. How you got into this situation we don't know. The cleanest way to resolve this is to backup your VM data and completely reinstall the system.

Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox

MP-Skull · 2026-01-11T07:00:56+0100

Impact said:
Don't use apt upgrade: https://lists.proxmox.com/pipermail/pve-devel/2025-March/068874.html
This is often caused by helper scripts. Give this a try: https://forum.proxmox.com/threads/proxmox-ve-web-gui-is-a-blank-page.172804/#post-806653

I gave this link a shot but get a bunch of broken packages ... and no clue on how to fix them

So considering a fresh install ... b ut that will nuke all my vm's ...

MP-Skull · 2026-01-11T07:02:57+0100

bbgeek17 said:
Proxmox 8 is based on Debian 12 Bookworm. PVE 9 is based on Debian 13 Trixie.
You should not be running PVE8 on Deb13, or PVE9 on Deb12. How you got into this situation we don't know. The cleanest way to resolve this is to backup your VM data and completely reinstall the system.

Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox

If I could get in and see what's going on, I would be able to backup the vm's ...

Any suggestions?

Impact · 2026-01-11T08:13:48+0100

MP-Skull said:
but get a bunch of broken packages ... and no clue on how to fix them

You need to share what you see when running the command.

MP-Skull · 2026-01-11T09:11:09+0100

UPDATE

I tried everything but was unable to restart the web GUI ... most likely since I don't have the required technical knowledge to do it.

I ended up reinstalling Proxmox 9.1 and restoring all VM's from the backup.

Everything back to normal.

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