Issue with s3 repository

Elastic Stack Elasticsearch
16

I've tried like this:

echo AWS_ACCESS_KEY |sudo bin/elasticsearch-keystore add --stdin s3.client.default.access_key && \
echo AWS_SECRET_KEY | sudo bin/elasticsearch-keystore add --stdin s3.client.default.secret_key

I've also tried it as root so no sudo required and I've tried it just using the elasticsearch-keystore add s3.client.default.access_key and then typing the key in!