Macro cummul feuil excel

bonjour

je voulais faire un cummul de plusieurs feuils excel mais ça marche pas un message d'erreur s'affiche sachant que l'entête des fichiers sont identique
voilà la macro

Sub A3_Cumul_brut()
Dim eni(300)
Set wb = ThisWorkbook
Set wso = Sheets("brut")
nl = wso.Cells(Rows.Count, 1).End(xlUp).Row
f = Dir(wb.Path & "\*.xls*")
While f <> ""
If f <> wb.Name Then
Set wbi = Workbooks.Open(wb.Path & "\" & f)
Set wsi = Sheets("brut")
For i = 1 To 300
eni(i) = 0
For j = 1 To 300
If Trim(wsi.Cells(1, i)) = Trim(wso.Cells(1, j)) Then eni(i) = j: Exit For
Next j

Next i
dl = wsi.UsedRange.Rows.Count
For i = 2 To dl
nl = nl + 1
For j = 1 To 300
wso.Cells(nl, eni(j)) = wsi.Cells(i, j)
Next j
Next i
wbi.Close
End If
f = Dir()
Wend
'''''''''''''''''''''''''''''''''''''''''''
'''''''''''''''''''''''''''''''''''''''''''
Cells.Select
ActiveWorkbook.Worksheets("brut").Sort.SortFields.Clear
ActiveWorkbook.Worksheets("brut").Sort.SortFields.Add Key:=Range( _
"A2:A58930"), SortOn:=xlSortOnValues, Order:=xlAscending, DataOption:= _
xlSortNormal
With ActiveWorkbook.Worksheets("brut").Sort
.SetRange Range("A1:FU58930")
.Header = xlYes
.MatchCase = False
.Orientation = xlTopToBottom
.SortMethod = xlPinYin
.Apply
End With

MsgBox "Opération effectuée"

End Sub