GNU/Linux Kali Su -c Authentication Failure Solution

Fixing

2. 2. Solving Authentication Issue

   Then to Solve Authentication Issue in Kali Linux
   First, you need the “sudo” Command Working. Possibly see: How to Enable sudo.
   Then simply provide to Set the Root Password with:

   sudo passwd root

   And so after the SuperUser Password Setup the “su -c” Issue should be Successfully Solved!