VBA Sort method of Range class failed - vba

Question

I know there are several threads on this topic but none of the answers have helped resolved this error.
I am trying to sort a table using three keys but receive the error, "Run-time error '1004': Sort method of Range class failed"
I've tried changing "Range("L2")" to ".Range("L2")" and received the error, "Compile error: Invalid or unqualified reference"
I've tried specifying the actual range instead of using columns, I've removed the last two keys and tried just the first, still received the run-time error.
shtData.Activate
shtData.Range(Range("A2"), Range("Z8000").End(xlUp)).Sort _
Key1:=Range("L2"), Order1:=xlAscending, _
Key2:=Range("M2"), Order2:=xlAscending, _
Key3:=Range("B2"), Order3:=xlAscending, _
Header:=xlYes
If you have any suggestions, I'd greatly appreciate it. I had this working yesterday and my excel crashed and did not recover the changes I made, I cannot figure out why I can't get it to work today.

Answer 1

you most probably have no data in "Z" column
if data rows range can be safely sized by column "A" not empty cells then go like follows
Option Explicit
Sub main()
Dim shtData As Worksheet
Set shtData = Worksheets("Data") '<--| some setting of 'shtData'
With shtData
.Range("Z2", .Cells(.Rows.Count, "A").End(xlUp)).Sort _
Key1:=.Range("L2"), Order1:=xlAscending, _
Key2:=.Range("M2"), Order2:=xlAscending, _
Key3:=.Range("B2"), Order3:=xlAscending, _
Header:=xlYes
End With
End Sub

Answer 2

If it is possible you could end up changing amount of columns again in the future, you could do something like.
With shtData
Range(Range("A2"), Cells(Range("A8000").End(xlUp).Row, Range("ZZ2").End(xlLeft).Column)
That way it will automatically size the sort area for however many columns you are using as well as rows.