[Python-apps-team] Bug#864603: gufw fails to launch gui on debian 10 (buster) desktop.

[DM]

After installing gufw via apt package manager, all attempts to start gufw result in following:

$ gufw
No protocol specified
Unable to init server: Could not connect: Connection refused
No protocol specified
Unable to init server: Could not connect: Connection refused

(gufw.py:8206): Gdk-CRITICAL **: 02:49:58.472: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:8206): Gdk-CRITICAL **: 02:49:58.472: gdk_keymap_get_modifier_mask: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:8206): Gdk-CRITICAL **: 02:49:58.472: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:8206): Gtk-CRITICAL **: 02:49:58.472: _gtk_replace_virtual_modifiers: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:8206): Gdk-CRITICAL **: 02:49:58.472: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:8206): Gdk-CRITICAL **: 02:49:58.472: gdk_keymap_get_modifier_mask: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:8206): Gdk-CRITICAL **: 02:49:58.472: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:8206): Gtk-CRITICAL **: 02:49:58.472: _gtk_replace_virtual_modifiers: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:8206): Gdk-CRITICAL **: 02:49:58.472: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:8206): Gdk-CRITICAL **: 02:49:58.472: gdk_keymap_get_modifier_mask: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:8206): Gdk-CRITICAL **: 02:49:58.472: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:8206): Gtk-CRITICAL **: 02:49:58.472: _gtk_replace_virtual_modifiers: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:8206): Gdk-CRITICAL **: 02:49:58.472: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:8206): Gdk-CRITICAL **: 02:49:58.472: gdk_keymap_get_modifier_mask: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:8206): Gdk-CRITICAL **: 02:49:58.472: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:8206): Gtk-CRITICAL **: 02:49:58.472: _gtk_replace_virtual_modifiers: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:8206): Gdk-CRITICAL **: 02:49:58.472: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:8206): Gdk-CRITICAL **: 02:49:58.472: gdk_keymap_get_modifier_mask: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:8206): Gdk-CRITICAL **: 02:49:58.472: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:8206): Gtk-CRITICAL **: 02:49:58.473: _gtk_replace_virtual_modifiers: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:8206): Gdk-CRITICAL **: 02:49:58.473: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:8206): Gdk-CRITICAL **: 02:49:58.473: gdk_keymap_get_modifier_mask: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:8206): Gdk-CRITICAL **: 02:49:58.473: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:8206): Gtk-CRITICAL **: 02:49:58.473: _gtk_replace_virtual_modifiers: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:8206): Gdk-CRITICAL **: 02:49:58.473: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:8206): Gdk-CRITICAL **: 02:49:58.473: gdk_keymap_get_modifier_mask: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:8206): Gdk-CRITICAL **: 02:49:58.473: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:8206): Gtk-CRITICAL **: 02:49:58.473: _gtk_replace_virtual_modifiers: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:8206): Gdk-CRITICAL **: 02:49:58.473: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:8206): Gdk-CRITICAL **: 02:49:58.473: gdk_keymap_get_modifier_mask: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:8206): Gdk-CRITICAL **: 02:49:58.473: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:8206): Gtk-CRITICAL **: 02:49:58.473: _gtk_replace_virtual_modifiers: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:8206): Gdk-CRITICAL **: 02:49:58.473: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:8206): Gdk-CRITICAL **: 02:49:58.473: gdk_keymap_get_modifier_mask: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:8206): Gdk-CRITICAL **: 02:49:58.473: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:8206): Gtk-CRITICAL **: 02:49:58.473: _gtk_replace_virtual_modifiers: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:8206): Gdk-CRITICAL **: 02:49:58.473: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:8206): Gdk-CRITICAL **: 02:49:58.473: gdk_keymap_get_modifier_mask: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:8206): Gdk-CRITICAL **: 02:49:58.473: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:8206): Gtk-CRITICAL **: 02:49:58.473: _gtk_replace_virtual_modifiers: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:8206): Gtk-CRITICAL **: 02:49:58.475: _gtk_style_provider_private_get_settings: assertion 'GTK_IS_STYLE_PROVIDER_PRIVATE (provider)' failed

(gufw.py:8206): Gtk-CRITICAL **: 02:49:58.475: _gtk_style_provider_private_get_settings: assertion 'GTK_IS_STYLE_PROVIDER_PRIVATE (provider)' failed

(gufw.py:8206): Gtk-CRITICAL **: 02:49:58.475: _gtk_style_provider_private_get_settings: assertion 'GTK_IS_STYLE_PROVIDER_PRIVATE (provider)' failed
/usr/bin/gufw-pkexec: line 13:  8206 Segmentation fault      python3 ${LOCATIONS[${i}]} $1


Host details:

System:    Host: 220 Kernel: 4.19.0-5-amd64 x86_64 bits: 64 Desktop: Gnome 3.30.2 Distro: Debian GNU/Linux 10 (buster)

Network:   Device-1: Intel 82579LM Gigabit Network driver: e1000e

Please, advise how this issue can be resolved if all posible.
Thank you dev team for your work and development.

Damien