In some cases, the engine will not render the graph and will instead display the message 

The current NumericalScale settings would result in more than 1000 labels which will make the scale unreadable. Please set the axis/ grid lines visibility to False or change the corresponding property.

The reason to see this or similar messages is that the selected LabelStep, MajorStep, or MinorStep scale property has a value that is too small and the processing engine will violate the previously mentioned constraint numbers.

The issue is fixed by manually correcting the values for those properties but I wish that the automatic configuration would be better.