Permission denied files.php

I m tryin to upload an image for which i m getting 2 error as file_get_contents(E:\Freemi\images): failed to open stream: Permission denied AND SECOND ONE IS Class ‘backendless\services\Exception’ not found.

Hi Jack,
Please describe more precisely how do you upload image?
Do you use CBL for PHP or PHP SDK?
Artur

use backendless\services\files\File;

$file = new File();
$file->setPath($_FILES[‘img’][‘tmp_name’]);
$saved_file = Backendless::$Files->upload( $file , ‘E:\Freemi\images’ );
For which i got file class File not found