#0  g_type_check_instance (type_instance=0x1b4e540) at /build/buildd/glib2.0-2.32.0/./gobject/gtype.c:4073
        node = 0x0
#1  0x00007f10b518933b in g_signal_emit_valist (instance=0x1b4e540, signal_id=218, detail=0, var_args=0x7fffbbcddd88) at /build/buildd/glib2.0-2.32.0/./gobject/gsignal.c:3083
        _g_boolean_var_ = <optimized out>
        instance_and_params = <optimized out>
        signal_return_type = <optimized out>
        param_values = <optimized out>
        node = 0x2521560
        i = <optimized out>
        n_params = <optimized out>
        __PRETTY_FUNCTION__ = "g_signal_emit_valist"
#2  0x00007f10b518a222 in g_signal_emit (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at /build/buildd/glib2.0-2.32.0/./gobject/gsignal.c:3352
        var_args = {{gp_offset = 24, fp_offset = 48, overflow_arg_area = 0x7fffbbcdde60, reg_save_area = 0x7fffbbcddda0}}
#3  0x00007f10b1e8b0a7 in ?? ()
No symbol table info available.
#4  0x0000000000000000 in ?? ()
No symbol table info available.