Unexpected token token found after the main object – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 7-8.9

Briefly, this error occurs when Elasticsearch encounters an unexpected token after the main object in a JSON request. This usually happens due to incorrect JSON formatting or syntax errors. To resolve this issue, you can: 1) Check the JSON request for any misplaced or missing brackets, commas, or quotation marks. 2) Validate your JSON using a JSON validator tool. 3) Ensure that the JSON request adheres to the correct Elasticsearch syntax and structure.

This guide will help you check for common problems that cause the log ” Unexpected token [” + token + “] found after the main object. ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: search.

Log Context

Log “Unexpected token [” + token + “] found after the main object.” class name is SearchSourceBuilder.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 if (checkTrailingTokens) {
 token = parser.nextToken();
 if (token != null) {
 throw new ParsingException(parser.getTokenLocation(); "Unexpected token [" + token + "] found after the main object.");
 return this;


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