Flatpak com.github.babluboy.bookworm not runing on Debian

[grandtoubab]

$ flatpak list
Name                                         Application ID                            Version       Branch            Installation
Bookworm                                     com.github.babluboy.bookworm              1.1.2         stable            system
Mesa                                         org.freedesktop.Platform.GL.default       21.3.9        21.08             system
Mesa                                         org.freedesktop.Platform.GL.default       23.0.2        22.08             system
Mesa (Extra)                                 org.freedesktop.Platform.GL.default       23.0.2        22.08-extra       system
openh264                                     org.freedesktop.Platform.openh264         2.1.0         2.0               system
openh264                                     org.freedesktop.Platform.openh264         2.1.0         2.2.0             system
GNOME Application Platform version 42        org.gnome.Platform                                      42                system
GNOME Application Platform version 44        org.gnome.Platform                                      44                system
Pitivi                                       org.pitivi.Pitivi                         2022.06       stable            system
Codecs                                       org.pitivi.Pitivi.Codecs                                stable            system
$ flatpak run com.github.babluboy.bookworm
(process:2): GLib-GIO-DEBUG: 17:25:29.960: _g_io_module_get_default: Found default implementation gvfs (GDaemonVfs) for ?gio-vfs?
** (process:2): DEBUG: 17:25:29.961: bookworm.vala:128: Bookworm Install Directory: /app/share
** (process:2): DEBUG: 17:25:29.962: bookworm.vala:129: Bookworm Install Tasks Scripts Directory: /app/share/com.github.babluboy.bookworm/scripts/tasks
** (process:2): DEBUG: 17:25:29.962: bookworm.vala:130: Bookworm Install Mobi Scripts Directory: /app/share/com.github.babluboy.bookworm/scripts/mobi_lib
** (process:2): DEBUG: 17:25:29.962: bookworm.vala:131: Bookworm User Data Directory: /home/guy/.var/app/com.github.babluboy.bookworm/data/com.github.babluboy.bookworm
Gtk-Message: 17:25:30.145: Failed to load module "canberra-gtk-module"
Gtk-Message: 17:25:30.185: Failed to load module "canberra-gtk-module"
(com.github.babluboy.bookworm:2): GLib-DEBUG: 17:25:30.191: unsetenv() is not thread-safe and should not be used after threads are created

An then nothing happened. No GUI