I am getting the error "Undefined property '$title'. intelephense (1014)" for the employee class.

class User {
    // Properties are attributes that belong to a class
    public $name;
    public $email;
    public $password;

    public function __construct($name, $email, $password) {
        $this->name = $name;
        $this->email = $email;
        $this->password = $password;
    }

    function set_name($name) {
        $this->name = $name;
    }

    function get_name() {
        return $this->name;
    }
}

// Inheritence
class Employee extends User {
    public function __construct($name, $email, $password, $title)
    {
        parent::__construct($name, $email, $password);
        $this->title = $title;
    }
    public function get_title() {
        return $this->title;
    }
}

$employee1 = new Employee('Sara', 'sara@gmail.com', '123', 'manager');
echo $employee1->get_title;

I am also getting the same error for '$get_title' when I try to echo on the last line.

I was expecting to see the employee's title: 'manager'.