openstack-ansible-os_sahara haproxy healthcheck failes

Sahara healthcheck failes in haproxy:

curl http://**.**.**.**:8386/healthcheck
{"error": {"message": "The request you have made requires authentication.", "code": 401, "title": "Unauthorized"}}

https://docs.openstack.org/sahara/latest/reference/restapi.html

Using OpenStack-ansible tag 18.1.9 on Centos7

HAProxy-status.log
Sep 17 13:07:14 localhost haproxy[99824]: Server sahara_api-back/controller3_sahara_container-1d38b43b is DOWN, reason: Layer7 wrong status, code: 401, info: "Unauthorized", check duration: 2ms. 2 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 remaining in queue.
Sep 17 13:07:14 localhost haproxy[99824]: Server sahara_api-back/controller2_sahara_container-ae4ab406 is DOWN, reason: Layer7 wrong status, code: 401, info: "Unauthorized", check duration: 2ms. 1 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 remaining in queue.
Sep 17 13:07:15 localhost haproxy[99824]: Server sahara_api-back/controller1_sahara_container-6c83419d is DOWN, reason: Layer7 wrong status, code: 401, info: "Unauthorized", check duration: 2ms. 0 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 remaining in queue.
Sep 17 13:07:15 localhost haproxy[99824]: backend sahara_api-back has no server available!