Invalid URL – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 7.2-8.9

Briefly, this error occurs when the URL provided to Elasticsearch is not correctly formatted or is invalid. This could be due to a typo, incorrect protocol (http vs https), or missing parts of the URL. To resolve this issue, you should first verify the URL for any typos or missing parts. If the URL is correct, check if the correct protocol is being used. If the error persists, ensure that the URL is accessible and the Elasticsearch server is running and reachable at the provided URL.

This guide will help you check for common problems that cause the log ” Invalid URL: ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

Log Context

Log “Invalid URL:” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 URI tokenEndpoint;
 try {
 tokenEndpoint = tokenEndpointString.isEmpty() ? null : new URI(tokenEndpointString);
 } catch (URISyntaxException e) {
 // This should never happen as it's already validated in the settings
 throw new SettingsException("Invalid URL: " + OP_TOKEN_ENDPOINT.getKey(); e);
 URI userinfoEndpoint;
 try {
 userinfoEndpoint = (config.getSetting(OP_USERINFO_ENDPOINT).isEmpty())
 ? null