Error when editing Elasticsearch index from Search Api

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Error: Class 'Drupal\elasticsearch_connector\ElasticSearch\Parameters\Factory\Cluster' not found in Drupal\elasticsearch_connector\ElasticSearch\Parameters\Factory\IndexFactory::getIndexName() (line 232 of modules/contrib/elasticsearch_connector/src/ElasticSearch/Parameters/Factory/IndexFactory.php).
Drupal\elasticsearch_connector\ElasticSearch\Parameters\Factory\IndexFactory::getIndexName(Object) (Line: 39)
Drupal\elasticsearch_connector\ElasticSearch\Parameters\Factory\IndexFactory::index(Object) (Line: 390)
Drupal\elasticsearch_connector\Plugin\search_api\backend\SearchApiElasticsearchBackend->updateIndex(Object) (Line: 283)
Drupal\search_api\Entity\Server->updateIndex(Object) (Line: 1428)
Drupal\search_api\Entity\Index->reactToServerSwitch(Object) (Line: 1353)
Drupal\search_api\Entity\Index->postSave(Object, 1) (Line: 51)
Drupal\search_api\Entity\SearchApiConfigEntityStorage->doPostSave(Object, 1) (Line: 432)

I have these modules enabled:

"require": {
"acquia/lightning": "~3.2.4",
"drupal/elasticsearch_aws_connector": "5.x-dev",
"drupal/elasticsearch_connector": "~5.0",
"drupal/search_api": "~1.11"
}