A PHP Error was encountered

Severity: Notice

Message: Undefined index: username

Filename: admin/top-header.php

Line Number: 13

Backtrace:

File: /home/sggsssn2/public_html/portal/application/views/admin/top-header.php
Line: 13
Function: _error_handler

File: /home/sggsssn2/public_html/portal/application/views/admin/add-client-data/add.php
Line: 15
Function: view

File: /home/sggsssn2/public_html/portal/application/controllers/Admin.php
Line: 919
Function: view

File: /home/sggsssn2/public_html/portal/index.php
Line: 315
Function: require_once