A PHP Error was encountered

Severity: Warning

Message: Undefined array key "HTTP_ACCEPT_LANGUAGE"

Filename: controllers/Vived.php

Line Number: 14

Backtrace:

File: /var/www/html/eduspace/application/controllers/Vived.php
Line: 14
Function: _error_handler

File: /var/www/html/eduspace/index.php
Line: 321
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: substr(): Passing null to parameter #1 ($string) of type string is deprecated

Filename: controllers/Vived.php

Line Number: 14

Backtrace:

File: /var/www/html/eduspace/application/controllers/Vived.php
Line: 14
Function: substr

File: /var/www/html/eduspace/index.php
Line: 321
Function: require_once

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