Yesterday macro worked, today it doesn't?

I use a macro that automatically generates a pivot table, re-formats the data, and then makes sure there are no blanks and that the DATA area of the pivot table is set to SUM OF and not COUNT OF.

It was working just fine yesterday but today it is giving me the following error and is highlighting this section of my code:

    With ActiveSheet.PivotTables("PivotTable1").PivotFields("Engagement Owner") 'removes any blanks within Engagement Owner field
    .PivotItems("(blank)").Visible = False
    End With

Run-Time Error '1004': Unable to get the PivotItems property of the PivotField class

Yesterday this macro worked great. Today it's giving me that error. What gives?