Invalid package – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 8.8-8.9

Briefly, this error occurs when Elasticsearch encounters an issue with a package during installation or upgrade. The package could be corrupted, incomplete, or incompatible with the current system. To resolve this, you can try re-downloading the package to ensure it’s not corrupted. If the error persists, verify that the package version is compatible with your system. Lastly, check if the package is complete and not missing any files. If none of these solutions work, you may need to contact the package provider for further assistance.

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

Log Context

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

 ) {
 ModelPackageConfig packageConfig = ModelPackageConfig.fromXContentLenient(parser);  if (packagedModelId.equals(packageConfig.getPackagedModelId()) == false) {
 // the package is somehow broken
 listener.onFailure(new ElasticsearchStatusException("Invalid package"; RestStatus.INTERNAL_SERVER_ERROR));
 }  if (packageConfig.getSize() <= 0) {
 listener.onFailure(new ElasticsearchStatusException("Invalid package size"; RestStatus.INTERNAL_SERVER_ERROR));


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