Executor error during find command: OperationFailed: Sort operation used more than the maximum 33554432 bytes of RAM. Add an index, or specify a smaller limit.

#0 /var/www/html/core/models/MongoBase.php(436): MongoDB\Driver\Manager->executeQuery('news.news', Object(MongoDB\Driver\Query))
#1 [internal function]: Mix\Core\Models\MongoBase->_find(Array, Array)
#2 /var/www/html/core/models/BaseModel.php(490): call_user_func_array(Array, Array)
#3 /var/www/html/app/controllers/ControllerBase.php(196): Mix\Core\Models\BaseModel->__call('find', Array)
#4 /var/www/html/app/controllers/IndexController.php(14): Mix\App\Controllers\ControllerBase->setListNews(Array)
#5 [internal function]: Mix\App\Controllers\IndexController->indexAction()
#6 [internal function]: Phalcon\Dispatcher->callActionMethod(Object(Mix\App\Controllers\IndexController), 'indexAction', Array)
#7 [internal function]: Phalcon\Dispatcher->_dispatch()
#8 [internal function]: Phalcon\Dispatcher->dispatch()
#9 /var/www/html/public/index.php(61): Phalcon\Mvc\Application->handle()
#10 {main}