#0  g_type_check_instance_cast (type_instance=0x4238317839080030, iface_type=94623820557152) at ../../../../gobject/gtype.c:4052
  [Error: gtype.c was not found in source tree]
#1  0x0000560f512756e8 in font_view_update_scale_factor (self=0x560f533cc2a0) at ../src/font-view.c:521
  516: 
  517: static void
  518: font_view_update_scale_factor (FontViewApplication *self)
  519: {
  520:     gint scale_factor = gtk_widget_get_scale_factor (self->main_window);
  521:     font_view_model_set_scale_factor (FONT_VIEW_MODEL (self->model),
  522:                                       scale_factor);
  523: }
  524: 
  525: static void
  526: font_view_ensure_model (FontViewApplication *self)
#2  0x00007fa95203ef9d in g_closure_invoke (closure=0x560f53493530, return_value=0x0, n_param_values=2, param_values=0x7ffd18415ac0, invocation_hint=0x7ffd18415a40) at ../../../../gobject/gclosure.c:804
  [Error: gclosure.c was not found in source tree]
#3  0x00007fa952051cde in signal_emit_unlocked_R (node=node@entry=0x560f530fa140, detail=detail@entry=397, instance=instance@entry=0x560f533cc2a0, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7ffd18415ac0) at ../../../../gobject/gsignal.c:3635
  [Error: gsignal.c was not found in source tree]
#4  0x00007fa95205a4b5 in g_signal_emit_valist (instance=0x560f533cc2a0, signal_id=<optimized out>, detail=397, var_args=var_args@entry=0x7ffd18415c90) at ../../../../gobject/gsignal.c:3391
  [Error: gsignal.c was not found in source tree]
#5  0x00007fa95205aecf in g_signal_emit (instance=instance@entry=0x560f533cc2a0, signal_id=<optimized out>, detail=<optimized out>) at ../../../../gobject/gsignal.c:3447
  [Error: gsignal.c was not found in source tree]
#6  0x00007fa952043464 in g_object_dispatch_properties_changed (object=0x560f533cc2a0, n_pspecs=<optimized out>, pspecs=<optimized out>) at ../../../../gobject/gobject.c:1080
  [Error: gobject.c was not found in source tree]
#7  0x00007fa9520459a9 in g_object_notify_by_spec_internal (pspec=0x560f5317ea60, object=0x560f533cc2a0) at ../../../../gobject/gobject.c:1173
  [Error: gobject.c was not found in source tree]
#8  g_object_notify_by_pspec (object=object@entry=0x560f533cc2a0, pspec=0x560f5317ea60) at ../../../../gobject/gobject.c:1283
  [Error: gobject.c was not found in source tree]
#9  0x00007fa953848120 in _gtk_widget_scale_changed (widget=0x560f533cc2a0) at ././gtk/gtkwidget.c:10852
  [Error: gtkwidget.c was not found in source tree]
#10 0x00007fa953855b2e in check_scale_changed (window=<optimized out>) at ././gtk/gtkwindow.c:6839
  [Error: gtkwindow.c was not found in source tree]
#11 0x00007fa953855b53 in gtk_window_configure_event (widget=widget@entry=0x560f533cc2a0, event=0x560f531204a0) at ././gtk/gtkwindow.c:8008
  [Error: gtkwindow.c was not found in source tree]
#12 0x00007fa9536f52ab in _gtk_marshal_BOOLEAN__BOXED (closure=0x560f5313f9c0, return_value=0x7ffd18415fb0, n_param_values=<optimized out>, param_values=0x7ffd18416010, invocation_hint=<optimized out>, marshal_data=<optimized out>) at ././gtk/gtkmarshalers.c:82
  [Error: gtkmarshalers.c was not found in source tree]
#13 0x00007fa95203ef9d in g_closure_invoke (closure=0x560f5313f9c0, return_value=0x7ffd18415fb0, n_param_values=2, param_values=0x7ffd18416010, invocation_hint=0x7ffd18415f90) at ../../../../gobject/gclosure.c:804
  [Error: gclosure.c was not found in source tree]
#14 0x00007fa952051758 in signal_emit_unlocked_R (node=node@entry=0x560f53181800, detail=detail@entry=0, instance=instance@entry=0x560f533cc2a0, emission_return=emission_return@entry=0x7ffd18416130, instance_and_params=instance_and_params@entry=0x7ffd18416010) at ../../../../gobject/gsignal.c:3673
  [Error: gsignal.c was not found in source tree]
#15 0x00007fa952059e4f in g_signal_emit_valist (instance=0x560f533cc2a0, signal_id=<optimized out>, detail=0, var_args=var_args@entry=0x7ffd184161e0) at ../../../../gobject/gsignal.c:3401
  [Error: gsignal.c was not found in source tree]
#16 0x00007fa95205aecf in g_signal_emit (instance=instance@entry=0x560f533cc2a0, signal_id=<optimized out>, detail=detail@entry=0) at ../../../../gobject/gsignal.c:3447
  [Error: gsignal.c was not found in source tree]
#17 0x00007fa95383fba4 in gtk_widget_event_internal (widget=widget@entry=0x560f533cc2a0, event=event@entry=0x560f531204a0) at ././gtk/gtkwidget.c:7723
  [Error: gtkwidget.c was not found in source tree]
#18 0x00007fa953841cfa in gtk_widget_event (widget=widget@entry=0x560f533cc2a0, event=event@entry=0x560f531204a0) at ././gtk/gtkwidget.c:7293
  [Error: gtkwidget.c was not found in source tree]
#19 0x00007fa9536f433e in gtk_main_do_event (event=<optimized out>) at ././gtk/gtkmain.c:1851
  [Error: gtkmain.c was not found in source tree]
#20 0x00007fa9531f2685 in _gdk_event_emit (event=event@entry=0x560f531204a0) at ././gdk/gdkevents.c:73
  [Error: gdkevents.c was not found in source tree]
#21 0x00007fa95324ee92 in gdk_event_source_dispatch (base=base@entry=0x560f53156e20, callback=<optimized out>, data=<optimized out>) at ././gdk/wayland/gdkeventsource.c:124
  [Error: gdkeventsource.c was not found in source tree]
#22 0x00007fa953e1ffb7 in g_main_dispatch (context=0x560f5310c450) at ../../../../glib/gmain.c:3148
  [Error: gmain.c was not found in source tree]
#23 g_main_context_dispatch (context=context@entry=0x560f5310c450) at ../../../../glib/gmain.c:3813
  [Error: gmain.c was not found in source tree]
#24 0x00007fa953e201f0 in g_main_context_iterate (context=context@entry=0x560f5310c450, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3886
  [Error: gmain.c was not found in source tree]
#25 0x00007fa953e2027c in g_main_context_iteration (context=context@entry=0x560f5310c450, may_block=may_block@entry=1) at ../../../../glib/gmain.c:3947
  [Error: gmain.c was not found in source tree]
#26 0x00007fa952323c4d in g_application_run (application=0x560f5310b0d0, argc=<optimized out>, argv=<optimized out>) at ../../../../gio/gapplication.c:2401
  [Error: gapplication.c was not found in source tree]
#27 0x0000560f51272497 in main (argc=2, argv=0x7ffd18416608) at ../src/font-view.c:938
  933:     bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
  934:     textdomain (GETTEXT_PACKAGE);
  935: 
  936:     app = font_view_application_new ();
  937:     g_application_add_main_option_entries (app, goption_options);
  938:     retval = g_application_run (app, argc, argv);
  939: 
  940:     g_object_unref (app);
  941:     return retval;
  942: }