A PHP Error was encountered

Severity: Notice

Message: session_start(): A session had already been started - ignoring

Filename: controllers/Admin.php

Line Number: 14

Backtrace:

File: /var/www/html/application/controllers/Admin.php
Line: 14
Function: session_start

File: /var/www/html/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: Cannot modify header information - headers already sent by (output started at /var/www/html/system/core/Exceptions.php:271)

Filename: Session/Session_driver.php

Line Number: 132

Backtrace:

File: /var/www/html/application/controllers/Admin.php
Line: 16
Function: session_destroy

File: /var/www/html/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: Cannot modify header information - headers already sent by (output started at /var/www/html/system/core/Exceptions.php:271)

Filename: libraries/Sso_client.php

Line Number: 52

Backtrace:

File: /var/www/html/application/libraries/Sso_client.php
Line: 52
Function: header

File: /var/www/html/application/controllers/Admin.php
Line: 17
Function: sso_login

File: /var/www/html/index.php
Line: 315
Function: require_once