Microsoft Excel: VLOOKUP gets value instead of 0 from a blank cell

It is difficult to use the following formula, execute a VLOOKUP from the PivotTable and incremental values ​​when I drag the formula, even working fine, however, when the cell is blank, the result is still being completed as 12:00:00 AM

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Formula: = IFERROR (VLOOKUP ($ A3, dynamic table! $ A $ 7: $ M $ 34, COLUMN (C: C), 0), "")