it is not possible to add or remove packages to a channel using the GUI

[AxHuGH]

Problem description

Dear Uyuni Support Team,
it's not possible to add or remove any package with the GUI to a channel.
with the spacecmd command this works as expected

Steps to reproduce the issue

try to add a new package into a channel with the GUI is not possible.
Can be done with spacecmd.

Uyuni-tools version used to deploy/manage the server (or proxy)

Information for package mgradm:
-------------------------------
Repository     : uyuni-server-stable
Name           : mgradm
Version        : 5.2.5-241000.2.3.uyuni5
Arch           : x86_64
Vendor         : obs://build.opensuse.org/systemsmanagement:Uyuni
Support Level  : unsupported
Installed Size : 11.5 MiB
Installed      : Yes
Status         : up-to-date
Source package : uyuni-tools-5.2.5-241000.2.3.uyuni5.src
Upstream URL   : https://github.com/uyuni-project/uyuni-tools
Summary        : Command line tool to install and update Uyuni
Description    :
    mgradm is a convenient tool to install and update Uyuni components as containers running
    either on Podman or a Kubernetes cluster.

Information for package mgrctl:
-------------------------------
Repository     : uyuni-server-stable
Name           : mgrctl
Version        : 5.2.5-241000.2.3.uyuni5
Arch           : x86_64
Vendor         : obs://build.opensuse.org/systemsmanagement:Uyuni
Support Level  : unsupported
Installed Size : 10.7 MiB
Installed      : Yes
Status         : up-to-date
Source package : uyuni-tools-5.2.5-241000.2.3.uyuni5.src
Upstream URL   : https://github.com/uyuni-project/uyuni-tools
Summary        : Command line tool to perform day-to-day operations on Uyuni
Description    :
    mgrctl is a tool helping with daily tasks on Uyuni components running as containers
    either on Podman or a Kubernetes cluster.

Uyuni server version

mgrctl exec -t cat /etc/uyuni-release
Uyuni release 2026.01

podman images -f label=org.uyuni.version -f containers=true --digests
REPOSITORY                                                                       TAG         DIGEST                                                                   IMAGE ID      CREATED       SIZE
registry.opensuse.org/uyuni/server                                               latest      sha256:2d531b2da3b5c6d736b944478ab4bb187e7f49b9fae56988769215b3dd812ef9  0981b3b8da8b  2 months ago  1.83 GB
registry.opensuse.org/uyuni/server-postgresql                                    latest      sha256:5f954caece441b52c119de1d58a810b4279c7e4d82bafccefe2ac541715a9672  5d0580fb5e38  2 months ago  429 MB
registry.opensuse.org/systemsmanagement/uyuni/master/containerfile/uyuni/server  latest      sha256:b26aff2da318195b605eac3753a09231fd12c5b784b5bde62ef4998c782ab29c  6f3e9684d28b  3 months ago  1.86 GB
registry.opensuse.org/uyuni/server                                               2025.10     sha256:8501637cd350e2316684cd67a2cf56c9ce5e6feb654c5d65a28eea43ecf6cb97  cd54de7fc03c  5 months ago  1.85 GB

Uyuni proxy version (if used)

Useful logs

Additional information

No response