A PHP Error was encountered

Severity: Warning

Message: preg_match(): Compilation failed: unmatched parentheses at offset 38

Filename: libraries/Templates.php

Line Number: 621

Backtrace:

File: /var/www/vhosts/wijasoju.com/httpdocs/application/libraries/Templates.php
Line: 621
Function: preg_match

File: /var/www/vhosts/wijasoju.com/httpdocs/application/models/Main_model.php
Line: 857
Function: get_operating_system

File: /var/www/vhosts/wijasoju.com/httpdocs/application/views/header.php
Line: 4
Function: add_analytics

File: /var/www/vhosts/wijasoju.com/httpdocs/application/controllers/Home.php
Line: 30
Function: view

File: /var/www/vhosts/wijasoju.com/httpdocs/index.php
Line: 315
Function: require_once