QFileDialog::getOpenFileName return nothing where executed from another computer.

Hi there guys, my program has a function that imports a picture into the program. this function works fine when i run it on my machine (i.e. the machine I used to write the program) but when I package the program with all the dll to run it on a different machine then all of a sudden QFileDialog::getOpenFileName does not return the file path in that machine. here is my code below.

Code:

void MainWindow::on_actionOpen_triggered()
{
    QString file = QFileDialog::getOpenFileName(this, "Import Picture", "/home", tr("Images (*.jpg *.png *.xpm)"));
 
    photo = new Picture(QRectF(201,225,152,200));
 
    if(!file.isEmpty()){
        photo->setParentItem(pagesList.at(pageIterator));
        photo->setPicDir(file);
        photo->setPainterID(1);
 
        for(int i = 0; i < 4; i++){
            QModelIndex index = photoModel->index(i, 0, QModelIndex());
            item = new QStandardItem();
            QPixmap pic(file);
            item->setData(pic, Qt::DecorationRole);
            photoModel->setData(index, pic, Qt::DecorationRole);
        }
    }
}