What can I do in these situations? because the logs go up, but they don't appear in the kibana.
[2020-12-05T20:11:29,881][WARN ][logstash.outputs.elasticsearch][main] Marking url as dead. Last error: [LogStash::Outputs::ElasticSearch::HttpClient::Pool::HostUnreachableError] Elasticsearch Unreachable: [http://localhost:9201/][Manticore::SocketTimeout] Read timed out {:url=>http://localhost:9201/, :error_message=>"Elasticsearch Unreachable: [http://localhost:9201/][Manticore::SocketTimeout] Read timed out", :error_class=>"LogStash::Outputs::ElasticSearch::HttpClient::Pool::HostUnreachableError"}
[2020-12-05T20:11:29,881][ERROR][logstash.outputs.elasticsearch][main] Attempted to send a bulk request to elasticsearch' but Elasticsearch appears to be unreachable or down! {:error_message=>"Elasticsearch Unreachable: [http://localhost:9201/][Manticore::SocketTimeout] Read timed out", :class=>"LogStash::Outputs::ElasticSearch::HttpClient::Pool::HostUnreachableError", :will_retry_in_seconds=>64}
[2020-12-05T20:11:32,553][WARN ][logstash.outputs.elasticsearch][main] Restored connection to ES instance {:url=>"http://localhost:9201/"}
[2020-12-05T20:13:33,899][WARN ][logstash.outputs.elasticsearch][main] Marking url as dead. Last error: [LogStash::Outputs::ElasticSearch::HttpClient::Pool::HostUnreachableError] Elasticsearch Unreachable: [http://localhost:9201/][Manticore::SocketTimeout] Read timed out {:url=>http://localhost:9201/, :error_message=>"Elasticsearch Unreachable: [http://localhost:9201/][Manticore::SocketTimeout] Read timed out", :error_class=>"LogStash::Outputs::ElasticSearch::HttpClient::Pool::HostUnreachableError"}
[2020-12-05T20:13:33,899][WARN ][logstash.outputs.elasticsearch][main] Marking url as dead. Last error: [LogStash::Outputs::ElasticSearch::HttpClient::Pool::HostUnreachableError] Elasticsearch Unreachable: [http://localhost:9201/][Manticore::SocketTimeout] Read timed out {:url=>http://localhost:9201/, :error_message=>"Elasticsearch Unreachable: [http://localhost:9201/][Manticore::SocketTimeout] Read timed out", :error_class=>"LogStash::Outputs::ElasticSearch::HttpClient::Pool::HostUnreachableError"}
[2020-12-05T20:13:33,899][WARN ][logstash.outputs.elasticsearch][main] Marking url as dead. Last error: [LogStash::Outputs::ElasticSearch::HttpClient::Pool::HostUnreachableError] Elasticsearch Unreachable: [http://localhost:9201/][Manticore::SocketTimeout] Read timed out {:url=>http://localhost:9201/, :error_message=>"Elasticsearch Unreachable: [http://localhost:9201/][Manticore::SocketTimeout] Read timed out", :error_class=>"LogStash::Outputs::ElasticSearch::HttpClient::Pool::HostUnreachableError"}
[2020-12-05T20:13:33,899][WARN ][logstash.outputs.elasticsearch][main] Marking url as dead. Last error: [LogStash::Outputs::ElasticSearch::HttpClient::Pool::HostUnreachableError] Elasticsearch Unreachable: [http://localhost:9201/][Manticore::SocketTimeout] Read timed out {:url=>http://localhost:9201/, :error_message=>"Elasticsearch Unreachable: [http://localhost:9201/][Manticore::SocketTimeout] Read timed out", :error_class=>"LogStash::Outputs::ElasticSearch::HttpClient::Pool::HostUnreachableError"}
[2020-12-05T20:13:33,899][ERROR][logstash.outputs.elasticsearch][main] Attempted to send a bulk request to elasticsearch' but Elasticsearch appears to be unreachable or down! {:error_message=>"Elasticsearch Unreachable: [http://localhost:9201/][Manticore::SocketTimeout] Read timed out", :class=>"LogStash::Outputs::ElasticSearch::HttpClient::Pool::HostUnreachableError", :will_retry_in_seconds=>64}
[2020-12-05T20:13:33,899][ERROR][logstash.outputs.elasticsearch][main] Attempted to send a bulk request to elasticsearch' but Elasticsearch appears to be unreachable or down! {:error_message=>"Elasticsearch Unreachable: [http://localhost:9201/][Manticore::SocketTimeout] Read timed out", :class=>"LogStash::Outputs::ElasticSearch::HttpClient::Pool::HostUnreachableError", :will_retry_in_seconds=>64}
[2020-12-05T20:13:33,899][ERROR][logstash.outputs.elasticsearch][main] Attempted to send a bulk request to elasticsearch' but Elasticsearch appears to be unreachable or down! {:error_message=>"Elasticsearch Unreachable: [http://localhost:9201/][Manticore::SocketTimeout] Read timed out", :class=>"LogStash::Outputs::ElasticSearch::HttpClient::Pool::HostUnreachableError", :will_retry_in_seconds=>64}
[2020-12-05T20:13:33,899][ERROR][logstash.outputs.elasticsearch][main] Attempted to send a bulk request to elasticsearch' but Elasticsearch appears to be unreachable or down! {:error_message=>"Elasticsearch Unreachable: [http://localhost:9201/][Manticore::SocketTimeout] Read timed out", :class=>"LogStash::Outputs::ElasticSearch::HttpClient::Pool::HostUnreachableError", :will_retry_in_seconds=>64}
[2020-12-05T20:13:34,086][WARN ][logstash.outputs.elasticsearch][main] Restored connection to ES instance {:url=>"http://localhost:9201/"}