Help with cronjob command line

Thank you for all the help.

It seems to be running as if I just try to send an email with simple code it comes through, but what seems to happen atm is this code is running but its not doing anything, but I think it could be because it is not getting to the database.  Can someone take a look at this please.

PHP Code:

<?php 

class Reminders extends CI_Controller { public function __construct() { parent::__construct(); 
  
  
  $this->load->library('email');
  $this->load->model('Appointment_model');
  
  }
  public function run()
  {
  $timestamp = strtotime("+1 days");
  $appointments = $this->Appointment_model->get_days_appointments($timestamp);
  if(!empty($appointments))
  {
      foreach($appointments as $appointment)
      {
          $this->email->set_newline("\r\n");
          $this->email->to($appointment->email);
          $this->email->from("[email protected]");
          $this->email->subject("Appointment Reminder");
          $this->email->message("You have an appointment tomorrow");
          $this->email->send();
          $this->Appointment_model->mark_reminded($appointment->id);
      }
  }
  }
}