A PHP Error was encountered

Error: Notice

Message: Undefined variable: nobody

Filename: apirequest/apirequest_lib.php

Line Number: 447

Backtrace:

File: C:\xampp\htdocs\sistema\sistemas\2.0.0\views\errors\html\error_php.php
Line: 14
Function: getBacktraceError

File: C:\xampp\htdocs\sistema\core\2.0.0\utilities\Exceptions.php
Line: 237
Function: include

File: C:\xampp\htdocs\sistema\core\2.0.0\utilities\Exceptions.php
Line: 217
Function: render_views

File: C:\xampp\htdocs\sistema\core\2.0.0\utilities\Functions.php
Line: 351
Function: show_php_error

File: C:\xampp\htdocs\sistema\core\2.0.0\libraries\apirequest\apirequest_lib.php
Line: 447
Function: _error

File: C:\xampp\htdocs\sistema\sistemas\2.0.0\controllers\auth.php
Line: 45
Function: __construct

File: C:\xampp\htdocs\sistema\core\2.0.0\core\Controller.php
Line: 117
Function: __construct

File: C:\xampp\htdocs\sistema\sistemas\App.php
Line: 85
Function: loadController

File: C:\xampp\htdocs\sistema\core\BasicCore.php
Line: 188
Function: __construct

File: C:\xampp\htdocs\sistema\core\BasicCore.php
Line: 163
Function: run

File: C:\xampp\htdocs\sistema\core\Core.php
Line: 166
Function: initialize

File: C:\xampp\htdocs\sistema\public_sistemas\index.php
Line: 126
Function: require

Este es el index del servicio