Elastisearch Export 1.1.0 not collecting many metrics on elasticsearch 7.17

[pauloccferreira]

I have elasticsearch_export version 1.1.0 scraping elasticsearch 7.17, but many metrics not retrieving values, i.e. elasticsearch_indices_docs, elasticsearch_thread_pool_rejected_count and others.

We have elasticsearch 7.3 where this issue not occurs. But, in this case, is necessary user/password authentication. Could this be the reason for scraping failure?