Script score the script could not be loaded – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

Briefly, this error occurs when Elasticsearch is unable to load a script for the script_score function, which is used to customize the scoring algorithm for search queries. This could be due to a missing or incorrectly named script, or insufficient permissions. To resolve this issue, ensure the script exists in the correct directory, verify the script name in your query matches the actual script name, and check that Elasticsearch has the necessary permissions to access and execute the script.

This guide will help you check for common problems that cause the log ” script_score: the script could not be loaded ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: query, index.

Log Context

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

 ScoreScript.Factory factory = context.compile(script; ScoreScript.CONTEXT);
 SearchLookup lookup = context.lookup();
 ScoreScript.LeafFactory searchScript = factory.newFactory(script.getParams(); lookup);
 return new ScriptScoreFunction(script; searchScript; lookup; context.index().getName(); context.getShardId());
 } 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 {
 Script script = null;