FreeRADIUS - The authentication server is unresponsive.

Hello FreeRADIUS experts, hope you are all well! Not sure where or what did i configure wrong, most thing are in default but still facing "The authentication server is unresponsive" error. I've complied step by step what i did in below docs, please help advice me where im wrong. Step by step: https://docs.google.com/document/d/1FE0Db4OacQjbCk_2ba QQ9WsOEDChDK6uomW3kJGgxtA/edit?usp=sharing Any and all help is much appreciated.