Expected ” + XContentParser.Token.START_OBJECT + ” in – How to solve this Elasticsearch error

Opster Team

July-20, Version: 1.7-8.0

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

This guide will help you check for common problems that cause the log ” Expected ” + XContentParser.Token.START_OBJECT + ” in ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: parser and search.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up to analyze Elasticsearch configuration and help resolve this error.

Log Context

Log “Expected [” + XContentParser.Token.START_OBJECT + “] in [“classname  is SearchSourceBuilder.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 this.ignoreFailure = ignoreFailure;
 this.fieldName = scriptFieldName;
 this.script = script;
 } else {
 throw new ParsingException(parser.getTokenLocation(); "Expected [" + XContentParser.Token.START_OBJECT + "] in ["
 + parser.currentName() + "] but found [" + token + "]"; parser.getTokenLocation());
 public String fieldName() {


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