QFileSystemModel setRootPath

I am attempting to create a Qt application which shows the contents of a folder (“Users” folder in Mac OS). Here is the code:

QFileSystemModel *dirModel = new QFileSystemModel;
dirModel->setRootPath("/Users");

ui->listView->setModel(dirModel);

I also attempted using this code

When i run the application, instead of showing the content of the “/Users” Folder, it shows the root drive (note: not the content of the drive). The folder does exist and i also tried using other folders.