A PHP Error was encountered

Severity: 8192

Message: strtolower(): Passing null to parameter #1 ($string) of type string is deprecated

Filename: controllers/ImageProcessor.php

Line Number: 26

Backtrace:

File: /var/www/fayyaztravels.com/html/application/controllers/ImageProcessor.php
Line: 26
Function: strtolower

File: /var/www/fayyaztravels.com/html/index.php
Line: 318
Function: require_once