localhost:29845: Executor error: OperationFailed: Sort operation used more than the maximum 33554432 bytes of RAM. Add an index, or specify a smaller limit.
#0 [internal function]: MongoCursor->rewind()
#1 [internal function]: iterator_to_array(Object(MongoCursor), false)
#2 [internal function]: Phalcon\Mvc\Collection::_getResultset(Array, Object(Kashkoal\Models\Feed), Object(MongoDB), false)
#3 /home/kashkol/domains/kashkol.ir/app/controllers/IndexController.php(87): Phalcon\Mvc\Collection::find(Array)
#4 [internal function]: Kashkoal\Controllers\IndexController->landingAction('6886', '6886')
#5 [internal function]: Phalcon\Dispatcher->callActionMethod(Object(Kashkoal\Controllers\IndexController), 'landingAction', Array)
#6 [internal function]: Phalcon\Dispatcher->_dispatch()
#7 [internal function]: Phalcon\Dispatcher->dispatch()
#8 /home/kashkol/domains/kashkol.ir/public_html/index.php(221): Phalcon\Mvc\Application->handle()
#9 {main}