I am having issues with my company's Magento test site. The issues are when searching using Elastic search, the resulting page is a blank page. Then, when I look for relevant errors in various logs, I see the following PHP error in the /var/log/httpd/error_log file:

[php7:error] [pid 22228] [client xx.xxx.xxx.xxx:xxxxx] PHP Fatal error:  
    Uncaught TypeError: Argument 1 passed to Magento\\Elasticsearch\\Model\\Adapter\\FieldMapper\\Product\\AttributeProvider::getByAttributeCode() 
    must be of the type string, null given, called in /var/www/html/test/vendor/magento/module-elasticsearch/SearchAdapter/Query/Builder/Sort.php 
    on line 92 and defined in /var/www/html/test/vendor/magento/module-elasticsearch/Model/Adapter/FieldMapper/Product/AttributeProvider.php:72\nStack 
    trace:\n#0 /var/www/html/test/vendor/magento/module-elasticsearch/SearchAdapter/Query/Builder/Sort.php(92): 
    Magento\\Elasticsearch\\Elasticsearch5\\SearchAdapter\\Query\\Builder->initQue in 
    on line 72, referer: www.mytestsite.com

Does anyone have any ideas on how to solve this error?

Now, here is my test site's setup:

PHP version: 7.2.27

Magento version: 2.3.4 community edition

OS: CentOS 7.7.1908

Elasticsearch: 6.8.7-1

Also here is further information on my test site's setup: I performed an in-place upgrade where I created the test site from a base Magento 2.3.4 install. Then, added all of the modules I needed. Finally, I copied over a backup of my company's production database and ran the Magento upgrade and compile commands (e.g., "magento setup:upgrade" and "magento setup:di:compile"). And note the production database was based-on Magento 2.3.1.

Thanks in advance for any answer, suggestions, and/or help you can provide.




2 Answers 2


This is magento issue. Fixed in https://github.com/magento/magento2/issues/27112#issuecomment-606175216


You should disable module Magento\Elasticsearch

  • Thanks for the answer, unfortunately, when I try to disable the module Magento\Elasticsearch, I get an error saying that the Magento_Elasticsearch6 is dependent on this module. So, I have to disable the Elastic version 6 module first which does not help.
    – Alvaro
    Apr 6, 2020 at 21:39
  • please find the line '89 file Sort.php' and run this command: 'if (in_array($item['field'], $this->skippedFields)) { => if (!$item['field'] || in_array($item['field'], $this->skippedFields)) {' Apr 7, 2020 at 4:20

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