A PHP Error was encountered

Severity: 8192

Message: Unparenthesized `a ? b : c ? d : e` is deprecated. Use either `(a ? b : c) ? d : e` or `a ? b : (c ? d : e)`

Filename: helpers/url_helper.php

Line Number: 162

Backtrace:

File: /var/www/html/grants/application/controllers/Home.php
Line: 15
Function: __construct

File: /var/www/html/grants/index.php
Line: 316
Function: require_once