Looks like possibly a destroyed GtkImage is being passed to image-helper's refresh_image() function
In that stacktrace, the GtkImage's icon_helper is NULL. In GTK+'s code, that field initialized with a call to _gtk_icon_helper_new() when the GtkImage is created, and then cleared and set to NULL in gtk_image_destroy().
Looks like possibly a destroyed GtkImage is being passed to image-helper's refresh_image() function
In that stacktrace, the GtkImage's icon_helper is NULL. In GTK+'s code, that field initialized with a call to _gtk_icon_ helper_ new() when the GtkImage is created, and then cleared and set to NULL in gtk_image_ destroy( ).