Hi all,
Back in February of last year we announced that we would be dropping support for ElasticSearch version 1 in April of 2020..
This post is a very late confirmation that ElasticSearch 1 is no longer supported, and as of today attempting to run with a configuration that supports version 1 will raise an error. The link above provides additional details on upgrading from version 1 to version 2.
thanks,
Cory