Elasticsearch 6 error with dropdown attribute

[benjcarriero]

Hello,

we configured Magento 2.3.4 and Elasticsearch 6.7.1, but when we try to filter in the layered navigation for a dropdown attribute, we have the following error:

{"error":{"root_cause":[{"type":"parsing_exception","reason":"[terms] unknown token [START_ARRAY] after [finset]","line":1,"col":235}],"type":"parsing_exception","reason":"[terms] unknown token [START_ARRAY] after [finset]","line":1,"col":235},"status":400} {"exception":"[object] (Elasticsearch\\Common\\Exceptions\\BadRequest400Exception(code: 400): {\"error\":{\"root_cause\":[{\"type\":\"parsing_exception\",\"reason\":\"[terms] unknown token [START_ARRAY] after [finset]\",\"line\":1,\"col\":235}],\"type\":\"parsing_exception\",\"reason\":\"[terms] unknown token [START_ARRAY] after [finset]\",\"line\":1,\"col\":235},\"status\":400} at /opt/bitnami/apps/magento/htdocs/vendor/elasticsearch/elasticsearch/src/Elasticsearch/Connections/Connection.php:636)"} []

Does anyone have experience on this?

Thanks.

[Sunil Patel]

Hello @benjcarriero 

https://github.com/magento/magento2/commit/4844c67145e87ae77dc30b09907fa3dfbf181fd5

please check above commit and fix it.

if works then mark as solution.

[benjcarriero]

Hello @Sunil Patel ,

I have already tried, but the problem persists.
What else could I see?

[Sunil Patel]

Have you removed 

 $resolvedField = $this->fieldMapper->getFieldName(
                $match['field'],
                ['type' => FieldMapperInterface::TYPE_QUERY]
            );

[benjcarriero]

Yes i did it.

[prockingpr408a]

Any update here?  @benjcarriero - any chance you got this to work?  Similar problem on our end.  

[beniamino_carriero]

@prockingpr408a Unfortunately not. On Magento 2.3 version we have not enabled Elasticsearch

[beniamino_carriero]

@prockingpr408a Unfortunately not. On Magento 2.3 version we have not enabled Elasticsearch

[webserviced404]

Guys the solution is simple, check your website access log.

There are some search engine bots accessing your website for crawling, some are going in depth doing filter products list. This cause error, as bot trying to play with our filter/search system.

(bot like semrush, etc)

This is the reason for exception error log from elasticsearch.

To prevent this, make sure setup proper robots.txt