837313 /usr/bin/glade-previewer:6:g_assertion_message:g_assertion_message_expr:gtk_notebook_buildable_add_child:_gtk_builder_add:parse_custom 945181 /usr/bin/glade-previewer:6:g_assertion_message:g_assertion_message_expr:gtk_notebook_buildable_add_child:gtk_buildable_add_child:_gtk_builder_add