A PHP Error was encountered

Severity: 8192

Message: preg_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated

Filename: helpers/common_helper.php

Line Number: 412

Backtrace:

File: /home/digiwink/client.teachinghub.org/application/helpers/common_helper.php
Line: 412
Function: preg_replace

File: /home/digiwink/client.teachinghub.org/application/controllers/Home.php
Line: 1917
Function: slugify

File: /home/digiwink/client.teachinghub.org/index.php
Line: 290
Function: require_once

{"redirectTo":"https:\/\/client.teachinghub.org\/login"}