Gnome-panel failed to acquire bus name (gnome-panel as a program for adding a shortcut to the desktop)?

I want to organize the desktop icons using gnome-panel, using https://losst.ru/dobavlenie-yarlyka-v-ubuntu (ru)

Installed gnome-panel

$ sudo apt install --no-install-recommends gnome-panel

Calling gnome-panel

$ gnome-panel

I get an error

Failed to acquire bus name!

gnome-panel does not work with Gnome Shell. It is a component of Gnome Flashback. You install it as a part of Gnome Flashback.

• Install the Gnome Flashbacksession: sudo apt install gnome-session-flashback. This will pull in the entire Gnome Flashback desktop, including gnome-panel.
• Switch to that session from the login screen: On the log in screen, select your name and before entering the password, select the cog wheel. Select "Gnome Flashback" on the menu. Entering your password will now bring you on the Gnome Flashback desktop.

Note: Do not confuse Gnome Flashback with Gnome Classic. Gnome Classic runs on Gnome Shell, and is configured by series of officially supported extensions. Gnome Flashback is a different desktop, derived from the old Gnome 2 desktop.