I'm testing the output chart to ppt file.
My code takes from example: https://help.syncfusion.com/file-formats/presentation/working-with-charts, the first example.
When the row
serieFeb.Values = chart.ChartData[2, 3, 4, 3]; is execute, the exeption has appear
The type initializer for 'Syncfusion.OfficeChart.Implementation.FormulaUtil' threw an exception. ---> System.NullReferenceException: Object reference not set to an instance of an object
What's wrong ?