Script_score: the script could not be loaded – How to solve this Elasticsearch error

Script_score: the script could not be loaded – 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 can resolve issues that cause many errors.

This guide will help you check for common problems that cause the log ” script_score: the script could not be loaded ” to appear. It’s important to understand the issues related to the log, so to get started, read the general overview on common issues and tips related to the Elasticsearch concepts: query and index.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up which analyses ES to pinpoint the cause of many errors and provides suitable actionable recommendations how to resolve them (free tool that requires no installation).

Log Context

Log”script_score: the script could not be loaded”classname  is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

ScoreScript.Factory factory = context.compile(script; ScoreScript.CONTEXT);
  ScoreScript.LeafFactory searchScript = factory.newFactory(script.getParams(); context.lookup());
  return new ScriptScoreFunction(script; searchScript;
  context.index().getName(); context.getShardId(); context.indexVersionCreated());
  } catch (Exception e) {
  throw new QueryShardException(context; "script_score: the script could not be loaded"; e);
  public static ScriptScoreFunctionBuilder fromXContent(XContentParser parser)
  throws IOException; ParsingException {


Run the Check-Up to get a customized report like this:

Analyze your cluster