Courier Fetch Error: unhandled courier request error: Gateway Timeout

Issue

• Kibana does not display the logs from Elasticsearch with:

Courier Fetch Error: unhandled courier request error: Gateway Timeout
Version: 4.6.4
Build: 10229
Error: unhandled courier request error: Gateway Timeout
    at handleError (https://kibana.apps.na.example.com/bundles/commons.bundle.js?v=10229:98251:23)
    at DocRequest.AbstractReqProvider.AbstractReq.handleFailure (https://kibana.apps.na.example.com/bundles/commons.bundle.js?v=10229:98171:15)
    at https://kibana.apps.na.example.com/bundles/commons.bundle.js?v=10229:98065:18
    at Array.forEach (<anonymous>)
    at https://kibana.apps.na.example.com/bundles/commons.bundle.js?v=10229:98063:19
    at processQueue (https://kibana.apps.na.example.com/bundles/commons.bundle.js?v=10229:42452:29)
    at https://kibana.apps.na.example.com/bundles/commons.bundle.js?v=10229:42468:28
    at Scope.$eval (https://kibana.apps.na.example.com/bundles/commons.bundle.js?v=10229:43696:29)
    at Scope.$digest (https://kibana.apps.na.example.com/bundles/commons.bundle.js?v=10229:43507:32)
    at Scope.$apply (https://kibana.apps.na.example.com/bundles/commons.bundle.js?v=10229:43804:25)