How to check if QTableWidgetItem exists ?

[rawfool]

I'm trying to give a network request based on a QTableWidget's cell data. If a QTableWidgetItem isn't set to a particular cell, then if I try to read the cell's text, the application crashes. Even after I check if the cell data isEmpty() or isNull() doesn't solve the issue as the item itself isn't present.
Is there any way tht I can find the existence of a QTableWidgetItem in QTableWidget ?

QString hRef = QTableWidget::item(nRow, nCol)->text(); // crashes here
if( hRef.isEmpty() || hRef.isNull() )
{
  return;
}

QString hRef = QTableWidget::item(nRow, nCol)->text(); // crashes here
if( hRef.isEmpty() || hRef.isNull() )
{
  return;
}

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