警告: Catch InvalidFormulaException in: sheet[Sheet2], cell[0,0], formula[Sheet1!B1-Sheet1!SUM(Sheet1!A1:A2)].
com.grapecity.documents.excel.InvalidFormulaException: The formula in A1 is invalid! [The formula is invalid! [There's a problem with this formula.]]
at com.grapecity.documents.excel.l.p.a(Unknown Source)
at com.grapecity.documents.excel.l.q.a(Unknown Source)