Ошибка "not all control paths return a value"

bool ChooseNumber::eventFilter(QObject *target, QEvent *event)
{
    firstPassNumber = ui->FirstNumber->text();
    secondPassNumber = ui->SecondNumber->text();
    thirdPassNumber = ui->ThirdNumber->text();
 
    if(target == ui->FirstNumber && QString(ui->FirstNumber->text()).isEmpty() == false)
    {
        if(event->type() == QEvent::MouseButtonPress)
        {
            close();
            placeCallDialog->getValuesNumber(firstPassNumber);
            placeCallDialog->exec();
            placeCallDialog->deleteLater();
            return true;
        } else { return false;}
    }
 
    if(target == ui->SecondNumber && QString(ui->SecondNumber->text()).isEmpty() == false)
    {
        if(event->type() == QEvent::MouseButtonPress)
        {
            close();
            placeCallDialog->getValuesNumber(secondPassNumber);
            placeCallDialog->exec();
            placeCallDialog->deleteLater();
            return true;
        } else { return false;}
    }
 
    if(target == ui->ThirdNumber && QString(ui->ThirdNumber->text()).isEmpty() == false)
    {
        if(event->type() == QEvent::MouseButtonPress)
        {
            close();
            placeCallDialog->getValuesNumber(thirdPassNumber);
            placeCallDialog->exec();
            placeCallDialog->deleteLater();
            return true;
        } else { return false;}
    }
}

public slots:
    bool eventFilter(QObject*, QEvent*event);