Zero shot classification result has no data – 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.

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 ” Zero shot classification result has no data ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

Log Context

Log “Zero shot classification result has no data”classname  is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

NlpTask.ResultProcessor { 
 public InferenceResults processResult(TokenizationResult tokenization; PyTorchInferenceResult pyTorchResult) {
 if (pyTorchResult.getInferenceResult().length < 1) {
 throw new ElasticsearchStatusException("Zero shot classification result has no data"; RestStatus.INTERNAL_SERVER_ERROR);
 // TODO only the first entry in the batch result is verified and
 // checked. Implement for all in batch
 if (pyTorchResult.getInferenceResult()[0].length != labels.length) {
 throw new ElasticsearchStatusException(


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