Could not parse inline template – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

Briefly, this error occurs when Elasticsearch is unable to parse an inline template due to incorrect syntax or invalid JSON format. This could be due to missing or extra commas, brackets, or quotes. To resolve this issue, you should carefully review your inline template to ensure it is correctly formatted. Use a JSON validator to check for any syntax errors. Additionally, ensure that all variables used in the template are correctly defined and formatted.

This guide will help you check for common problems that cause the log ” Could not parse inline template ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: template, mustache.

Log Context

Log “Could not parse inline template” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 if (parser.currentToken() == XContentParser.Token.START_OBJECT) {
 // convert the template to json which is the only supported XContentType (see CustomMustacheFactory#createEncoder)
 try (XContentBuilder builder = XContentFactory.jsonBuilder()) {
 } catch (IOException e) {
 throw new ParsingException(parser.getTokenLocation(); "Could not parse inline template"; e);
 } else {
 }; SOURCE_FIELD; ObjectParser.ValueType.OBJECT_OR_STRING);


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