After running a composer update, the Elastica library upgrades to version 3.0 where some search_api_elasticsearch_elastica dependencies have been removed, such as Elastica\Facet\Terms.
The module needs a more specific Elastica version in composer.json.
Original issue: https://www.drupal.org/node/2646088
After running a composer update, the Elastica library upgrades to version 3.0 where some search_api_elasticsearch_elastica dependencies have been removed, such as Elastica\Facet\Terms.
The module needs a more specific Elastica version in composer.json.