Unexpected token while parsing source settings – 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 ” unexpected token while parsing source settings ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: source and settings.

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 “unexpected token while parsing source settings”classname  is MultiGetRequest.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 } else if (token.isValue()) {
 } else {
 throw new ElasticsearchParseException("unexpected token while parsing source settings");
 fetchSourceContext = new FetchSourceContext(fetchSourceContext.fetchSource();
 includes == null ? Strings.EMPTY_ARRAY : includes.toArray(new String[includes.size()]);


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