Why do I get a Run-Time error '1004' on a MacBook when I copy the code from a PC version of VBA

Question

I am new to VBA and learning; however, I am also running VBA on my MAC instead of PC. That being said, I copy the code down just like I have seen in VBA used by PCs and I get a run-time Error '1004'. Can someone please explain to me why that is?

My code is simple: MonthArray(1) = Range("myMonths").Cells(i,1).value

Thoughts anyone?

Sub Array_OneDimension()
Dim MonthArray(1 To 12) As String
Dim i As Byte

    For i = 1 To 12
        MonthArray(i) = Range("myMonths").Cells(i, 1).Value 'This is where the error is
        
    
    Next i

End Sub

I was expecting the code to loop through the range and pull out the value in the locals window.