A PHP Error was encountered

Severity: Notice

Message: Undefined variable: output

Filename: app/Projects.php

Line Number: 83

Backtrace:

File: /usr/home/factica/www/arquitectura/application/controllers/app/Projects.php
Line: 83
Function: _error_handler

File: /usr/home/factica/www/arquitectura/index.php
Line: 307
Function: require_once