Android Question java.lang.IllegalStateException: Zip File is closed


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the code is taken from TextEditor of @Erel and trying to initialize the xls. (apoi lib and addtional jars are included)

java.lang.IllegalStateException: Zip File is closed

help needed.

Private Sub B4XPage_MenuClick (Tag As String)
       Select Tag
        Case "save"
'            Save
        Case "load"
    End Select
End Sub
Private Sub Load
    #if B4A
    Wait For (FileHandler1.Load) Complete (Result As LoadResult)
    #else if B4i
    Wait For (FileHandler1.Load(Me, B4XPages.GetNativeParent(Me).TopRightButtons.Get(1))) Complete (Result As LoadResult)
    #end if
End Sub

Private Sub HandleLoadResult(Result As LoadResult)
    If Result.Success Then
        xls.Initialize("",File.Combine("ContentDir","Aavana.xlsx"))     ' here i get the error  java.lang.IllegalStateException: Zip File is closed
'        Dim s As String
'        Try
'            s = File.ReadString(Result.Dir, Result.FileName)
'            toast.Show($"File '${Result.RealName}' loaded"$)
'        Catch
'            s = "Error loading file"
'            Log(LastException)
'        End Try
'        txtField.Text = s
    End If
End Sub