Get folder by Unique Id not working REST API

Hi all,

I checked around about API for getting folder detail by Unique Id on SharePoint Stack Exchange and API get all document in a folder by folder Unique Id, 

And Result is : REST endpoint: /_api/web/GetFolderById('<folder unique id>')

But when I test this API on Postman, it not working well.

Have any meet this solution. Please help me. 

REST get all folders

REST get FOLDER Detail