Unexpected token ” + token + ” – Elasticsearch Error How To Solve Related Issues

Unexpected token ” + token + ” – Elasticsearch Error How To Solve Related Issues

Updated: July-20

Elasticsearch Version: 1.7-8.0

Before you begin reading this guide, we recommend you try running the Elasticsearch Error Check-Up  which can resolve issues causing many errors 


This guide will help you check for common problems that cause the log “unexpected token ” + token + “” to appear. It’s important to understand the issues related to the log, so to get started, read the general overview on common issues and tips related to the Elasticsearch concepts: .

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up which analyses ES to discover the cause of many errors and provides suitable actionable recommendations (free tool that requires no installation). 

Log Context

Log”unexpected token [” + token + “]”classname  is SnapshotInfo.java
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

  } else {
  throw new ElasticsearchParseException("unexpected token [" + token + "]");
  if (uuid == null) {
  // the old format where there wasn't a UUID
  uuid = name;

Related issues to this log

We have gathered selected Q&A from the community and issues from Github, that can help fix related issues please review the following for further information :

1 ElasticSearch/npm: elasticdump: Unexpected token error during dumping of response data -views 679 

Unexpected token { in JSON -views   222,score -1

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