When a GraphsView destructor is called, application is crashed because "pure virtual method called"

This happens when any series is added to a GraphsView with the _{addSeries(series)} method.

To test this can be added to a simple Window, and crash will happen when closing the window, or to a StackView, and on Pop, it will crash.

LineSeries {
  id: theLineSeries
  color: "red"
  XYPoint {x: 1; y: 1}
  XYPoint {x: 2; y: 2}
  XYPoint {x: 3; y: 3}
}
GraphsView {
  anchors.fill: parent  
  Component.onCompleted: {
    addSeries(theLineSeries);
  }
  axisY: ValueAxis {min: 0;max: 10}
  axisX: ValueAxis {max: 5;min: 0 }
}