Latest version throwing an exception in ExcelWorkSheet.cs method SavePivotTables when using a template with pivot tables.
problem line
```
var ws = Workbook.Worksheets[pt.CacheDefinition.SourceRange.WorkSheet];
```
SourceRange is null in the Sheet I am saving.
Comments: A new item was created on that, 15421. I hope that this issue will be fixed sooner because I have tryed the solutions but kepp having compilation errors.
problem line
```
var ws = Workbook.Worksheets[pt.CacheDefinition.SourceRange.WorkSheet];
```
SourceRange is null in the Sheet I am saving.
Comments: A new item was created on that, 15421. I hope that this issue will be fixed sooner because I have tryed the solutions but kepp having compilation errors.