A PHP Error was encountered

Severity: Warning

Message: Attempt to read property "id_doc" on null

Filename: controllers/Usuarios.php

Line Number: 22

Backtrace:

File: /var/www/html/application/controllers/Usuarios.php
Line: 22
Function: _error_handler

File: /var/www/html/index.php
Line: 289
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: helpers/url_helper.php

Line Number: 564

Backtrace:

File: /var/www/html/application/views/administracion/header.php
Line: 58
Function: redirect

File: /var/www/html/application/controllers/Usuarios.php
Line: 23
Function: view

File: /var/www/html/index.php
Line: 289
Function: require_once