Problem with timeout 2 min

Hi,
How resolve this?

I got after 2 minutes Gateway timeout. I think this Node keep-alive but no sure.
Version : 0.8.0-1

kibana.yml:
elasticsearch.requestTimeout: 1200000
elasticsearch.shardTimeout: 1200000

nginx.conf:

proxy_connect_timeout 3000;
proxy_send_timeout 3000;
proxy_read_timeout 60m;
send_timeout 3000;

and got this error:
[error] 63994#63994: *369 upstream prematurely closed connection while reading response header from upstream, client:ip , server: mysite.net, request: “POST /elasticsearch/_msearch?rest_total_hits_as_int=true&ignore_throttled=true HTTP/1.1”, upstream: “http://127.0.0.1:5601/elasticsearch/_msearch?rest_total_hits_as_int=true&ignore_throttled=true”, host: “mysite.net”, referrer: “https:/mysite.net/app/kibana”

“cluster_name” : “esams”,
“status” : “green”,
“timed_out” : false,
“number_of_nodes” : 8,
“number_of_data_nodes” : 4,
“active_primary_shards” : 1326,
“active_shards” : 2653,
“relocating_shards” : 0,
“initializing_shards” : 0,
“unassigned_shards” : 0,
“delayed_unassigned_shards” : 0,
“number_of_pending_tasks” : 0,
“number_of_in_flight_fetch” : 0,
“task_max_waiting_in_queue_millis” : 0,
“active_shards_percent_as_number” : 100.0

Kibana debug.log:

{“type”:“log”,"@timestamp":“2019-07-16T15:45:27Z”,“tags”:[“error”,“elasticsearch”,“data”],“pid”:17673,“message”:“Request error, retrying\nPOST https://localhost:9200/_msearch?rest_total_hits_as_int=true&ignore_throttled=true => socket hang up”}

After update to lastest version same situation. Anyone can you help me?