Elsatic search for anonymous users

[BrzI Channel]

Hi folks,

running v 2.6.4. Logged in users have no issues - everything works fine.

Anonymous users get elasticsearch errors when trying one of these:
-advanced search

-accessing any of the "Browse by" options on the left navigation menu
-clicking the "Browse' button on the top menu bar.

I have repopulated the search index but no luck. Issue persists.
I tried looking at the elasticsearch logs but they do not seem to be human readable.

I checked the cluster health and ti looks good to me:

curl -XGET 'http://localhost:9200/_cluster/health?pretty=true'
{
  "cluster_name" : "elasticsearch",
  "status" : "yellow",
  "timed_out" : false,
  "number_of_nodes" : 1,
  "number_of_data_nodes" : 1,
  "active_primary_shards" : 4,
  "active_shards" : 4,
  "relocating_shards" : 0,
  "initializing_shards" : 0,
  "unassigned_shards" : 4,
  "delayed_unassigned_shards" : 0,
  "number_of_pending_tasks" : 0,
  "number_of_in_flight_fetch" : 0,
  "task_max_waiting_in_queue_millis" : 0,
  "active_s

Text of elasticsearch rrror:

Search error encountered

Elasticsearch error: Elastica\Exception\ResponseException

What else can I do... ?

[BrzI Channel]

Figured out the elasticsearch log ...this is what it says:

org.elasticsearch.transport.RemoteTransportException: [EQ-HwQ6][142.232.76.192:9300][indices:data/read/search[phase/query]]
Caused by: org.elasticsearch.index.query.QueryShardException: No mapping found for [i18n.en_US.title.alphasort] in order to sort on
        at org.elasticsearch.search.sort.FieldSortBuilder.build(FieldSortBuilder.java:262) ~[elasticsearch-5.6.16.jar:5.6.16]
        at org.elasticsearch.search.sort.SortBuilder.buildSort(SortBuilder.java:156) ~[elasticsearch-5.6.16.jar:5.6.16]
        at org.elasticsearch.search.SearchService.parseSource(SearchService.java:634) ~[elasticsearch-5.6.16.jar:5.6.16]
        at org.elasticsearch.search.SearchService.createContext(SearchService.java:485) ~[elasticsearch-5.6.16.jar:5.6.16]
        at org.elasticsearch.search.SearchService.createAndPutContext(SearchService.java:461) ~[elasticsearch-5.6.16.jar:5.6.16]
        at org.elasticsearch.search.SearchService.executeQueryPhase(SearchService.java:257) ~[elasticsearch-5.6.16.jar:5.6.16]
        at org.elasticsearch.action.search.SearchTransportService$6.messageReceived(SearchTransportService.java:343) ~[elasticsearch-5.6.16.jar:5.6.16]
        at org.elasticsearch.action.search.SearchTransportService$6.messageReceived(SearchTransportService.java:340) ~[elasticsearch-5.6.16.jar:5.6.16]
        at org.elasticsearch.transport.RequestHandlerRegistry.processMessageReceived(RequestHandlerRegistry.java:69) ~[elasticsearch-5.6.16.jar:5.6.16]
        at org.elasticsearch.transport.TransportService$7.doRun(TransportService.java:662) [elasticsearch-5.6.16.jar:5.6.16]
        at org.elasticsearch.common.util.concurrent.ThreadContext$ContextPreservingAbstractRunnable.doRun(ThreadContext.java:675) [elasticsearch-5.6.16.jar:5.6.16]
        at org.elasticsearch.common.util.concurrent.AbstractRunnable.run(AbstractRunnable.java:37) [elasticsearch-5.6.16.jar:5.6.16]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) [?:?]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) [?:?]
        at java.lang.Thread.run(Thread.java:829) [?:?]

My quibit defautl culture is as follows:

    default_culture:        en

How can I find all the information objects that have an i18n mapping set to en_US and then update them to en ?

Thanks