Created Unassigned: error saving file with databars [9485]

Hello,
Trying to add conditional formatting to a Range - AddConditionalFormat().Databar(XLColor.Green);
And then SaveAs.
In a range there are number values. In Excel I can add conditional formatting databar with no problems.

Got exception
System.Collections.Generic.KeyNotFoundException
at ClosedXML.Excel.XLCFDataBarConverter.Convert(IXLConditionalFormat cf, Int32 priority, SaveContext context)
at ClosedXML.Excel.XLCFConverters.Convert(IXLConditionalFormat conditionalFormat, Int32 priority, SaveContext context)
at ClosedXML.Excel.XLWorkbook.GenerateWorksheetPartContent(WorksheetPart worksheetPart, XLWorksheet xlWorksheet, SaveContext context)
at ClosedXML.Excel.XLWorkbook.CreateParts(SpreadsheetDocument document)
at ClosedXML.Excel.XLWorkbook.CreatePackage(String filePath, SpreadsheetDocumentType spreadsheetDocumentType)
at ClosedXML.Excel.XLWorkbook.SaveAs(String file)