[SOLVED] Problem on discover and pkcon and some bugs after updating to 6.2

I’m not expert in Linux, so I will provide the required information if needed.

Previously I already update plasma into 6.2. It seems successful, and after I restart, the updates seems appears again. But when I try to update, it stucks on 0% for a long time.

When done, this warning message appears.

<html>Cannot remove system package:<br/><br/>WARNING: You are trying to remove the following essential packages: libapt-pkg6.0 (due to apt) libgnutls30 (due to apt) neon-repositories-launchpad-mozilla (due to neon-settings-2) libcanberra0 (due to plasma-desktop) libglib2.0-0 (due to plasma-desktop) libext2fs2 (due to e2fsprogs) </html>

I search the online solution, and some solution said I should use pkcon instead of discovery if I want it more seamless. But when I try to do pkcon refresh, it stuck on queue.

~$  pkcon refresh
Refreshing cache                        [=========================]
Waiting in queue                        [       ==                ]    

The bugs:

  1. I cannot do screen sharing after updating to 6.2
  2. I cannot update to 24.04.1, because the system said, I have to do full system upgrade before updating.

And when I try to do full system upgrade using apt this happen

~$  sudo apt upgrade
On KDE neon you should use `pkcon update` to install updates.
If you absolutely must use apt you do have to use dist-upgrade or full-upgrade in place of the upgrade command.
  https://neon.kde.org/faq#command-to-update
Abort.

I don’t install anything weird using apt, I only install some basic stuff, like gcc, unar, etc.
Even I install Python using pyenv. I don’t install using apt.

Please let me know what I can do. Thank you.
Sorry, I cannot provide the picture too much, since I am a new user.

KDE neon 22.04 6.2
Kernel: 6.8.0-45-generic x86_64
Desktop: KDE Plasma 6.2.0
Display: wayland

I tried to do apt full-upgrades, and now plenty library conflicted.

After reading some posts from the others, it seems KDE Neon is not suitable for beginner like me. I decide to re-install again. I try another distro.

Thank you. Case closed.