The “visiblepw” is not set the sudoers file and as a result, the user will not be able to run sudo over ssh
December 11, 2018 2 Comments
Problem:
During Agent Deployment from EM, we get the following warning:
Solution:
Change the entry “Defaults !visiblepw” to “Defaults visiblepw” in the /etc/sudoers file and re-try Agent Deployment.

Nicce blog post
It resolved my issue. Thanks!