# A quick tip: Fix for ProductNotSupportedError: The client noticed that the server is not a supported distribution of Elasticsearch

In January 2021, Elastic, which owns Elasticsearch, [changed its license to SSPL](https://www.elastic.co/pt/blog/licensing-change) (Server Side Public License) due to a conflict with Cloud Services (mainly [AWS](https://www.geekwire.com/2021/dispute-elastic-aws-highlights-ongoing-battle-open-source-business-model/)).

Because of that, a lot of developers are facing the error message:

```console
ProductNotSupportedError: The client noticed that the server is not a supported distribution of Elasticsearch
```

If you use the official Node.js client for Elasticsearch, [elasticsearch-js](https://github.com/elastic/elasticsearch-js), I recommend you downgrade the module version to version 7.12.0.

Example in a package.json file:
```
"@elastic/elasticsearch": "~7.12.0"
``` 

Best,
Luiz Celso