'Access subsite from parent site using sharepoint rest api

I am trying to get all the folders in the subsite, the below URL returns all the folders inside my subsite when I use the subsite in the URI

I am using Mulesoft on new object oob sharepoint connector.

https://mycompany.sharepoint.com/sites/Test2/projects/mysubsite/_api/web/GetFolderByServerRelativeUrl('documents')/Folders

but I need to access it via a relative URL that does not return any folders, can anyone help me understand what I am doing wrong here.

Test2 is my parent site, projects is a web part and mysubsite is a site under which we have the folder

https://mycompany.sharepoint.com/sites/Test2/_api/web/GetFolderByServerRelativeUrl('sites/Test2/projects/mysubsite/documents')/Folders

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Solution	Source