A PHP Error was encountered

Severity: Notice

Message: Undefined index: login

Filename: models/Provedor_configuracao_cliente_model.php

Line Number: 588

Backtrace:

File: /var/www/sistema/central_assinante/models/Provedor_configuracao_cliente_model.php
Line: 588
Function: _error_handler

File: /var/www/sistema/central_assinante/controllers/Provedor_configuracao_cliente.php
Line: 138
Function: logar

File: /var/www/sistema/index.php
Line: 311
Function: require_once