What can be seen in the logs is that for some reason Elasticsearch had internal failure when trying to perform the plots query. I will send you the instruction on how to check for the health of ES nodes. It may provide us with some clues
Ok , i will start a new experiment to see if the error will be still there? Sorry i dont really get how to show the trains-apiserver log
SuccessfulKoala55 AppetizingMouse58 I delete logs/apiserver.log, and restart the server , and here is the log. It show cannot connect to ElasticSearch
https://stackoverflow.com/questions/28287261/connection-timeout-with-elasticsearch
How to set the timeout?