Could not parse dynamic attachments. expected a string value for field; – 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 ” could not parse dynamic attachments. expected a string value for field; ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

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 “could not parse dynamic attachments. expected a string value for [{}] field;”classname  is DynamicAttachments.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

currentFieldName = parser.currentName();
 } else if (XField.LIST_PATH.match(currentFieldName; parser.getDeprecationHandler())) {
 if (token == XContentParser.Token.VALUE_STRING) {
 listPath = parser.text();
 } else {
 throw new ElasticsearchParseException("could not parse dynamic attachments. expected a string value for [{}] field; " +
 "but found [{}]"; XField.LIST_PATH.getPreferredName(); token);
 }
 } else if (XField.TEMPLATE.match(currentFieldName; parser.getDeprecationHandler())) {
 try {
 template = Attachment.Template.parse(parser);

 

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