How to ignore empty column in prime eng p-fileUpload?

primeNG p-fileUpload is not ignoring empty column when I tried to upload excel file with empty column values. Could you please help me to fix this?

Here is my html code :

<p-fileUpload #form name="myfile[]" [customUpload]="true" accept=".xlsx" [multiple]=false (uploadHandler)="getFileData($event,form)" (onSelect)="clearUpload($event)" (onRemove)="clearUpload($event)" (onClear)="clearUpload($event)">