Is wallch being maintained?

Tue Jul 20 17:56:53 UTC 2021

I'm getting the following error messages when running wallch:

ralmond at cherry:~$ wallch

(process:55334): Gtk-CRITICAL **: 13:53:20.890: 
IA__gtk_icon_theme_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): GLib-GObject-WARNING **: 13:53:20.890: invalid (NULL) 
pointer instance

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.890: 
g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

(process:55334): GLib-GObject-WARNING **: 13:53:20.891: invalid (NULL) 
pointer instance

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.891: 
g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

(process:55334): GLib-GObject-WARNING **: 13:53:20.891: invalid (NULL) 
pointer instance

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.891: 
g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.892: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.892: g_object_ref: 
assertion 'G_IS_OBJECT (object)' failed

(process:55334): GLib-GObject-WARNING **: 13:53:20.892: invalid (NULL) 
pointer instance

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.892: 
g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.892: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.892: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.892: g_object_ref: 
assertion 'G_IS_OBJECT (object)' failed

(process:55334): GLib-GObject-WARNING **: 13:53:20.892: invalid (NULL) 
pointer instance

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.892: 
g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.892: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.892: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.892: g_object_ref: 
assertion 'G_IS_OBJECT (object)' failed

(process:55334): GLib-GObject-WARNING **: 13:53:20.892: invalid (NULL) 
pointer instance

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.892: 
g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.892: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.892: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.892: g_object_ref: 
assertion 'G_IS_OBJECT (object)' failed

(process:55334): GLib-GObject-WARNING **: 13:53:20.892: invalid (NULL) 
pointer instance

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.892: 
g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.892: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.892: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.892: g_object_ref: 
assertion 'G_IS_OBJECT (object)' failed

(process:55334): GLib-GObject-WARNING **: 13:53:20.892: invalid (NULL) 
pointer instance

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.892: 
g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.892: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.892: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.892: g_object_ref: 
assertion 'G_IS_OBJECT (object)' failed

(process:55334): GLib-GObject-WARNING **: 13:53:20.892: invalid (NULL) 
pointer instance

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.892: 
g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.892: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.892: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.892: g_object_ref: 
assertion 'G_IS_OBJECT (object)' failed

(process:55334): GLib-GObject-WARNING **: 13:53:20.892: invalid (NULL) 
pointer instance

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.892: 
g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.892: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.892: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.892: g_object_ref: 
assertion 'G_IS_OBJECT (object)' failed

(process:55334): GLib-GObject-WARNING **: 13:53:20.892: invalid (NULL) 
pointer instance

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.892: 
g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.892: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.892: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.892: g_object_ref: 
assertion 'G_IS_OBJECT (object)' failed

(process:55334): GLib-GObject-WARNING **: 13:53:20.892: invalid (NULL) 
pointer instance

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.892: 
g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.892: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.892: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.892: g_object_ref: 
assertion 'G_IS_OBJECT (object)' failed

(process:55334): GLib-GObject-WARNING **: 13:53:20.892: invalid (NULL) 
pointer instance

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.892: 
g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.892: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.892: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.892: g_object_ref: 
assertion 'G_IS_OBJECT (object)' failed

(process:55334): GLib-GObject-WARNING **: 13:53:20.892: invalid (NULL) 
pointer instance

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.892: 
g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.892: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.892: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.892: g_object_ref: 
assertion 'G_IS_OBJECT (object)' failed

(process:55334): GLib-GObject-WARNING **: 13:53:20.892: invalid (NULL) 
pointer instance

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.892: 
g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.892: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.892: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.892: g_object_ref: 
assertion 'G_IS_OBJECT (object)' failed

(process:55334): GLib-GObject-WARNING **: 13:53:20.892: invalid (NULL) 
pointer instance

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.892: 
g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.892: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.892: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.892: g_object_ref: 
assertion 'G_IS_OBJECT (object)' failed

(process:55334): GLib-GObject-WARNING **: 13:53:20.892: invalid (NULL) 
pointer instance

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.892: 
g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.892: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.892: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.892: g_object_ref: 
assertion 'G_IS_OBJECT (object)' failed

(process:55334): GLib-GObject-WARNING **: 13:53:20.892: invalid (NULL) 
pointer instance

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.892: 
g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.892: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.892: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.892: g_object_ref: 
assertion 'G_IS_OBJECT (object)' failed

(process:55334): GLib-GObject-WARNING **: 13:53:20.892: invalid (NULL) 
pointer instance

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.892: 
g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.892: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.892: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.892: g_object_ref: 
assertion 'G_IS_OBJECT (object)' failed

(process:55334): GLib-GObject-WARNING **: 13:53:20.892: invalid (NULL) 
pointer instance

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.892: 
g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.892: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.892: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.893: g_object_ref: 
assertion 'G_IS_OBJECT (object)' failed

(process:55334): GLib-GObject-WARNING **: 13:53:20.893: invalid (NULL) 
pointer instance

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.893: 
g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.893: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.893: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.893: g_object_ref: 
assertion 'G_IS_OBJECT (object)' failed

(process:55334): GLib-GObject-WARNING **: 13:53:20.893: invalid (NULL) 
pointer instance

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.893: 
g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.893: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.893: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.893: g_object_ref: 
assertion 'G_IS_OBJECT (object)' failed

(process:55334): GLib-GObject-WARNING **: 13:53:20.893: invalid (NULL) 
pointer instance

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.893: 
g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.893: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.893: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.893: g_object_ref: 
assertion 'G_IS_OBJECT (object)' failed

(process:55334): GLib-GObject-WARNING **: 13:53:20.893: invalid (NULL) 
pointer instance

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.893: 
g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.893: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.893: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.893: g_object_ref: 
assertion 'G_IS_OBJECT (object)' failed

(process:55334): GLib-GObject-WARNING **: 13:53:20.893: invalid (NULL) 
pointer instance

(process:55334): GLib-GObject-CRITICAL **: 13:53:20.893: 
g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

(process:55334): Gtk-CRITICAL **: 13:53:20.893: 
IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed
Could not create pixmap from :/icons/Pictures/toolbar-default.png
Could not create pixmap from :/icons/Pictures/toolbar-default.png
Could not create pixmap from :/icons/Pictures/toolbar-default.png
Could not create pixmap from :/icons/Pictures/toolbar-default.png
Could not create pixmap from :/icons/Pictures/toolbar-default.png
Could not create pixmap from :/icons/Pictures/toolbar-default.png
Could not create pixmap from :/icons/Pictures/toolbar-default.png
Could not create pixmap from :/icons/Pictures/toolbar-default.png
Could not create pixmap from :/icons/Pictures/toolbar-default.png
Could not create pixmap from :/icons/Pictures/toolbar-default.png
Could not create pixmap from :/icons/Pictures/toolbar-default.png
libpng warning: iCCP: known incorrect sRGB profile
Could not create pixmap from :/icons/Pictures/toolbar-default.png
Could not create pixmap from :/icons/Pictures/toolbar-default.png
Could not create pixmap from :/icons/Pictures/toolbar-default.png
Could not create pixmap from :/icons/Pictures/toolbar-default.png
Could not create pixmap from :/icons/Pictures/toolbar-default.png
Could not create pixmap from :/icons/Pictures/toolbar-default.png
Could not create pixmap from :/icons/Pictures/toolbar-default.png
Could not create pixmap from :/icons/Pictures/toolbar-default.png
Could not create pixmap from :/icons/Pictures/toolbar-default.png
Could not create pixmap from :/icons/Pictures/toolbar-default.png
Could not create pixmap from :/icons/Pictures/toolbar-default.png
Could not create pixmap from :/icons/Pictures/toolbar-default.png

(process:55334): Gtk-WARNING **: 13:53:21.591: Screen for GtkWindow not 
set; you must always set
a screen for a GtkWindow before using the window

(process:55334): Gdk-CRITICAL **: 13:53:21.591: 
IA__gdk_screen_get_display: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): Gdk-CRITICAL **: 13:53:21.591: 
IA__gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(process:55334): GLib-GObject-WARNING **: 13:53:21.591: invalid (NULL) 
pointer instance

(process:55334): GLib-GObject-CRITICAL **: 13:53:21.591: 
g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

(process:55334): Gtk-WARNING **: 13:53:21.591: Screen for GtkWindow not 
set; you must always set
a screen for a GtkWindow before using the window

(process:55334): Gdk-CRITICAL **: 13:53:21.591: 
IA__gdk_screen_get_display: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): Gdk-CRITICAL **: 13:53:21.591: 
IA__gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(process:55334): GLib-GObject-WARNING **: 13:53:21.591: invalid (NULL) 
pointer instance

(process:55334): GLib-GObject-CRITICAL **: 13:53:21.591: 
g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

(process:55334): Gdk-CRITICAL **: 13:53:30.666: 
IA__gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(process:55334): Gdk-CRITICAL **: 13:53:30.666: 
IA__gdk_screen_get_root_window: assertion 'GDK_IS_SCREEN (screen)' failed

(process:55334): Gdk-CRITICAL **: 13:53:30.666: 
IA__gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed
Segmentation fault (core dumped)

I'm running 4.0-0ubuntu6(hirsute) from Pop_OS 21.04.

The link to the developer's page appears to be broken (goes to a 
hostname not registered type page).

Is there an upstream place from which the source code comes?

Thanks for any assistance you can provide.
	--Russell Almond