Failed to parse licenses expected an array of licenses – 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 Error Check-Up which analyzes 2 JSON files to detect many configuration errors.

To easily locate the root cause and resolve this issue try AutoOps for Elasticsearch & OpenSearch. It diagnoses problems by analyzing hundreds of metrics collected by a lightweight agent and offers guidance for resolving them.

This guide will help you check for common problems that cause the log ” failed to parse licenses expected an array of licenses ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin and license.

Log Context

Log “failed to parse licenses expected an array of licenses”classname  is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 if (license == null && !pre20Licenses.isEmpty()) {
 license = pre20Licenses.get(0);
 } else {
 throw new ElasticsearchParseException("failed to parse licenses expected an array of licenses");
 } else if (Fields.LICENSE.equals(currentFieldName)) {
 license = License.fromXContent(parser);
 // Ignore all other fields - might be created with new version


See how you can use AutoOps to resolve issues

How helpful was this guide?

We are sorry that this post was not useful for you!

Let us improve this post!

Tell us how we can improve this post?

Analyze your cluster & get personalized recommendations

Skip to content