runtime error 91 object variable or With block variable not set

'Drop Down liste 1
    Private Sub UserForm_Initialize()
    Sheets("Ark2").Select
    Dim ws As Worksheet
    Dim rCombo As Range

    'set a variable to the sheet with the list
    Set ws = Sheet2
    'define the list
    With ws
        Set rCombo = .Range("C3:C15")
    End With
    'populate the combobox using the List Property
    Me.ComboBox1.List = rCombo.Value
        
    Sheets("Ark2").Select
    Dim mg As Worksheet
    Dim mgCombo As Range

    'set a variable to the sheet with the list
    Set mg = Sheet2
    'define the list
    With mg
        Set mgCombo = .Range("M3:M12")
    End With
    'populate the combobox using the List Property
    Me.ComboBox3.List = mgCombo.Value
    
    Sheets("Ark2").Select
    Dim mgg As Worksheet
    Dim mggCombo As Range

    'set a variable to the sheet with the list
    Set mgg = Sheet2
    'define the list
    With mgg
        Set mggCombo = .Range("N3:N10")
    End With
    'populate the combobox using the List Property
    Me.ComboBox2.List = mggCombo.Value
    
    'Bilagsnr. default
    Sheets("Konteringsliste").Select
    Dim bilagsnrfelt As Range
    Set bilagsnrfelt = Range("b6:b95")
    forrigebilagsnr = Application.Max(bilagsnrfelt)
    Bilagsnummer = forrigebilagsnr + 1
    
    Me.TextBox3.Text = Bilagsnummer
    
    'Sett case   til ComboBox1. Text
Select Case Me.ComboBox1.Text
'"Case" = Sjekker hva som står i ComboBox 1 for så å postere dette!

Case Me.ComboBox1

    
    'Søke
    Cells.Find(What:=Me.ComboBox1, After:=ActiveCell, LookIn:= _
    xlFormulas, LookAt:=xlPart, SearchOrder:=xlByRows, SearchDirection:= _
    xlNext, MatchCase:=False, SearchFormat:=False).Activate
        
    Tekst = ActiveCell.Text
    Selection.Offset(0, 1).Select
    Debet = ActiveCell.Value
    Selection.Offset(0, 1).Select
    DebetKonto = ActiveCell.Value
    Selection.Offset(0, 1).Select
    DebetMva = ActiveCell.Value
    Selection.Offset(0, 1).Select
    Kredit = ActiveCell.Value
    Selection.Offset(0, 1).Select
    KreditKonto = ActiveCell.Value
    Selection.Offset(0, 1).Select
    KreditMva = ActiveCell.Value
    
    End Select
    
    'Sett data hentet som default i tekstboksene
    Me.TextBox7.Text = Tekst
    Me.TextBox8.Value = Debet
    Me.TextBox9.Value = Kredit
    Me.TextBox10.Text = DebetKonto
    Me.TextBox13.Text = KreditKonto
    Me.TextBox11.Value = DebetMva
    Me.TextBox12.Value = KreditMva
    
       
    
End Sub

Hello.

I get this error message when I try to run it "runtime error 91 object variable or With block variable not set"
It is part of a UserForm.

This is the part that creates problems.

Select Case Me.ComboBox1.Text
'"Case" = Sjekker hva som står i ComboBox 1 for så å postere dette!

Case Me.ComboBox1

    
    'Søke
    Cells.Find(What:=Me.ComboBox1, After:=ActiveCell, LookIn:= _
    xlFormulas, LookAt:=xlPart, SearchOrder:=xlByRows, SearchDirection:= _
    xlNext, MatchCase:=False, SearchFormat:=False).Activate
        
    Tekst = ActiveCell.Text
    Selection.Offset(0, 1).Select
    Debet = ActiveCell.Value
    Selection.Offset(0, 1).Select
    DebetKonto = ActiveCell.Value
    Selection.Offset(0, 1).Select
    DebetMva = ActiveCell.Value
    Selection.Offset(0, 1).Select
    Kredit = ActiveCell.Value
    Selection.Offset(0, 1).Select
    KreditKonto = ActiveCell.Value
    Selection.Offset(0, 1).Select
    KreditMva = ActiveCell.Value
    
    End Select
    
    'Sett data hentet som default i tekstboksene
    Me.TextBox7.Text = Tekst
    Me.TextBox8.Value = Debet
    Me.TextBox9.Value = Kredit
    Me.TextBox10.Text = DebetKonto
    Me.TextBox13.Text = KreditKonto
    Me.TextBox11.Value = DebetMva
    Me.TextBox12.Value = KreditMva

It is something that is at the Norwegian. Because I am a Norwegian