Invalid Forward Reference When Run Macro.|VBA & Macros|Excel Forum|My Online Training Hub

Hello, I have this macro that was running correctly until Dec 29.  Now, I have an error in the line below, could you please help me to understand the error?

Thanks

Sub AdvanceFilter_Copy()

Dim rgdata As Range

Dim rgCriteria As Range

Dim rgOutput As Range

Dim Rg As Range

Set Rg = ThisWorkbook.Worksheets("Output").Range("A1").CurrentRegion

Rg.Offset(1).Clear

Set rgdata = Workbooks("filename.xlsm").Worksheets("Schedule-A").Range("A11").CurrentRegion Error Here

Set rgCriteria = ThisWorkbook.Worksheets("Ultera Scheduled Time").Range("J2").CurrentRegion

Set rgOutput = ThisWorkbook.Worksheets("Output").Range("A1").CurrentRegion

rgdata.AdvancedFilter xlFilterCopy, rgCriteria, rgOutput

MsgBox "Hi " & Application.UserName & _

vbNewLine & "The report has been updated", , "Schedule A"

End Sub