объект требуется ошибка при запуске макроса вне цикла

Question

Итак, я работаю над этим проектом, в котором я хочу открыть все файлы в определенной папке, запустить макрос, который скопирует и вставит все данные из «листа 1» из этих файлов в «калькулятор» рабочей книги с рабочей таблицей. MRG '.

Итак, у меня есть базовый c код для открытия каждого файла 1 за один раз, но когда я пытаюсь запустить свой макрос, я получаю

Ошибка 'Требуется объект'

на open.wb

   Sub LoopAllExcelFilesInFolder()
'PURPOSE: To loop through all Excel files in a user specified folder and perform a set task on them

Dim wb As Workbook
Dim myPath As String
Dim myFile As String
Dim myExtension As String
Dim FldrPicker As FileDialog

'Optimize Macro Speed
  Application.ScreenUpdating = False
  Application.EnableEvents = False
  Application.Calculation = xlCalculationManual

'Retrieve Target Folder Path From User
  Set FldrPicker = Application.FileDialog(msoFileDialogFolderPicker)

    With FldrPicker
      .Title = "Select A Target Folder"
      .AllowMultiSelect = False
        If .Show <> -1 Then GoTo NextCode
        myPath = .SelectedItems(1) & "\"
    End With

'In Case of Cancel
NextCode:
  myPath = myPath
  If myPath = "" Then GoTo ResetSettings

'Target File Extension (must include wildcard "*")
  myExtension = "*.xls*"

'Target Path with Ending Extention
  myFile = Dir(myPath & myExtension)

'Loop through each Excel file in folder
  Do While myFile <> ""
    'Set variable equal to opened workbook
      Set wb = Workbooks.Open(Filename:=myPath & myFile)

    'Ensure Workbook has opened before moving on to next line of code
      DoEvents

    'Change First Worksheet's Background Fill Blue
    'wb.Worksheets(1).Range("A1:Z1").Interior.Color = RGB(51, 98, 174)

    CopyPasteMRG


    'Save and Close Workbook
      wb.Close SaveChanges:=False

    'Ensure Workbook has closed before moving on to next line of code
      DoEvents

    'Get next file name
      myFile = Dir
  Loop

'Message Box when tasks are completed
  MsgBox "Task Complete!"

ResetSettings:
  'Reset Macro Optimization Settings
    Application.EnableEvents = True
    Application.Calculation = xlCalculationAutomatic
    Application.ScreenUpdating = True

End Sub

 'CopyPasteMRG' is the macro i want to run on each file; the error comes from wb.open within 'CopyPasteMRG'

Sub CopyPasteMRG()
'

    'need code to activate the correct opened workbook
    'has to find the range start and end by itself

    wb.Open

    Range("A1:BV59").Select
    Selection.Copy
    Application.CutCopyMode = False
    Selection.Copy
    Application.WindowState = xlNormal
    Windows("Ex-Pakistan Calculator Final.xlsm").Activate
    Sheets("MRG").Select
    'has to find the last row by itself
    ActiveWindow.SmallScroll Down:=294
    Range("A301").Select
    ActiveSheet.Paste
    Windows("INMAA JAN 2020.xlsx").Activate
End Sub

Я новичок в VBA и могу использовать любую помощь, какую только смогу, спасибо.