The easier way to solve the problem is to remove the blank rows below the data range (from row 12 to the last row of the sheet)

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Removing IFERROR the cell with the formula shows the following error

Replacing A1:A by A1:A11

The easier way to solve the problem is to remove the blank rows below the data range (from row 12 to the last row of the sheet)

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Removing `IFERROR` the cell with the formula shows the following error

Replacing A1:A by A1:A11

If we replace A1:A11 by A2:A12 we get the following