Deleting twice a document raises exception.

[rhnonose]

The following exception is raised when deleting twice a document from an index:

** (FunctionClauseError) no function clause matching in Elasticsearch.Exception.build/2
    lib/elasticsearch/exception.ex:35: Elasticsearch.Exception.build(%{"_id" => "54", "_index" => "listings-1525371175", "_primary_term" => 1, "_seq_no" => 42, "_shards" => %{"failed" => 0, "successful" => 1, "total" => 2}, "_type" => "_doc", "_version" => 14, "result" => "not_found"}, nil)
    lib/elasticsearch/exception.ex:22: Elasticsearch.Exception.exception/1
    lib/elasticsearch.ex:389: Elasticsearch.format/1
    (re) lib/re_web/search/server.ex:57: ReWeb.Search.Server.handle_cast/2
    (stdlib) gen_server.erl:616: :gen_server.try_dispatch/4
    (stdlib) gen_server.erl:686: :gen_server.handle_msg/6
    (stdlib) proc_lib.erl:247: :proc_lib.init_p_do_apply/3

Seems like Elasticsearech.Exception.build/2 is not expecting "result" => "not_found" as a result.
Elasticsearch version: 6.2.4