`mirror-registry install` fails with error "Permission denied (password)."

Issue

• The mirror-registry install command terminates with the following error.

  TASK [Gathering Facts] **********************************************************************************************************************************************************************
  fatal: [root@mirror.hogehoge.com]: UNREACHABLE! => {"changed": false, "msg": "Failed to connect to the host via ssh: Warning: Permanently added 'mirror.hogehoge.com,10.10.10.99' (ECDSA) to the list of known hosts.\r\nroot@mirror.hogehoge.com: Permission denied (password).", "unreachable": true}
  

• How can this error be resolved to install mirror-registry?