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.