Invalid URL: – 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 Check-Up which can resolve issues that cause many errors.

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.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up to analyze Elasticsearch configuration and help resolve this error.

Log Context

Log “Invalid URL:”classname  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 :
 new URI(config.getSetting(OP_USERINFO_ENDPOINT));


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