I have re-read many articles I haven't understood in what a problem, help. By call save() the mistake appears. I use the Mongo database.
#0 [internal function]: Phalcon\Di->get('db', NULL)
#1 [internal function]: Phalcon\Di->getShared('db')
#2 [internal function]: Phalcon\Mvc\Model\Manager->_getConnection(Object(Camers), NULL)
#3 [internal function]: Phalcon\Mvc\Model\Manager->getWriteConnection(Object(Camers))
#4 [internal function]: Phalcon\Mvc\Model->getWriteConnection()
#5 C:\xampp\htdocs\laravel\app\controllers\CamerController.php(14): Phalcon\Mvc\Model->save()
#6 [internal function]: CamerController->AddCamersAction()
#7 [internal function]: Phalcon\Dispatcher->callActionMethod(Object(CamerController), 'AddCamersAction', Array)
#8 [internal function]: Phalcon\Dispatcher->dispatch()
#9 C:\xampp\htdocs\laravel\public\index.php(31): Phalcon\Mvc\Application->handle()
#10 {main}