nautilus-extension-brasero shows no menu-entry in nautilus 20.04

[Matthias Sprau]

Hi, I installed with Ubuntu 20.04 the extensions

nautilus-extension-burner,
nautilus-extension-brasero

after https://wiki.ubuntuusers.de/Nautilus/. But when I right-click on a music file or folder, no suitable entry for burning appears in the following menu.

Informations:

uname -a
Linux USER 5.4.0-37-generic #41-Ubuntu SMP Wed Jun 3 18:57:02 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

dpkg -s nautilus-extension-brasero
Package: nautilus-extension-brasero
Status: install ok installed
Priority: optional
Section: gnome
Installed-Size: 72
Maintainer: Ubuntu Developers <email address hidden>
Architecture: amd64
Source: brasero
Version: 3.12.2-6ubuntu1
Replaces: brasero (<< 3.12.1-5~)
Depends: libbrasero-media3-1 (>= 3.0.0), libc6 (>= 2.4), libglib2.0-0 (>= 2.37.3), libgtk-3-0 (>= 3.0.0), libnautilus-extension1a (>= 3.21.92-3~), gvfs
Breaks: brasero (<< 3.12.1-5~)
Enhances: nautilus
Description: CD/DVD burning integration for Nautilus

~$ dpkg -s nautilus
Package: nautilus
Status: install ok installed
Priority: optional
Section: gnome
Installed-Size: 2015
Maintainer: Ubuntu Developers <email address hidden>
Architecture: amd64
Version: 1:3.36.2-0ubuntu1
Replaces: totem (<< 3.31.91-1)
Depends: bubblewrap, desktop-file-utils (>= 0.7), gsettings-desktop-schemas (>= 3.8.0), gvfs (>= 1.3.2), libglib2.0-data, libnautilus-extension1a (= 1:3.36.2-0ubuntu1), nautilus-data (= 1:3.36.2-0ubuntu1), shared-mime-info (>= 0.50), tracker, tracker-miner-fs, tracker-extract, libatk1.0-0 (>= 1.32.0), libc6 (>= 2.29), libcairo-gobject2 (>= 1.10.0), libcairo2 (>= 1.14.0), libdbusmenu-glib4 (>= 0.4.2), libgdk-pixbuf2.0-0 (>= 2.25.2), libgexiv2-2 (>= 0.10.0), libglib2.0-0 (>= 2.58.1), libgnome-autoar-0-0 (>= 0.2.1), libgnome-desktop-3-19 (>= 3.17.92), libgstreamer-plugins-base1.0-0 (>= 1.0.0), libgstreamer1.0-0 (>= 1.0.0), libgtk-3-0 (>= 3.22.27), libpango-1.0-0 (>= 1.44.6), libpangocairo-1.0-0 (>= 1.42), libselinux1 (>= 2.0), libtracker-sparql-2.0-0 (>= 1.12.0), libunity9 (>= 3.4.6)
Recommends: gvfs-backends, librsvg2-common
Suggests: eog, evince | pdf-viewer, gnome-sushi, nautilus-extension-brasero, nautilus-sendto, totem | mp3-decoder, xdg-user-dirs
Breaks: totem (<< 3.31.91-1)
Description: file manager and graphical shell for GNOME