Cannot generate error message for deserialization – How to solve this Elasticsearch error

Opster Team

March-22, Version: 1.7-8.0

Before you begin reading this guide, we recommend you try running the Elasticsearch Error Check-Up which analyzes 2 JSON files to detect many configuration errors.

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This guide will help you check for common problems that cause the log ” cannot generate error message for deserialization ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: .

Log Context

Log “cannot generate error message for deserialization”classname  is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

builder.field("error"; "error building toString out of XContent: " + e.getMessage());
 builder.field("stack_trace"; ExceptionsHelper.stackTrace(e));
 return toString(builder);
 } catch (IOException e2) {
 throw new ElasticsearchException("cannot generate error message for deserialization"; e);
 private static XContentBuilder createBuilder(boolean pretty; boolean human) throws IOException {


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