Not able to use Create Library Folder API

Seafile Server
1

I am using the docker version of Seafile, which I locally installed and I am trying to create a Library folder using this API

http://localhost/api/v2.1/admin/libraries/5e7212d7-1bdb-4351-bc25-58a274b1419f/dirents/?parent_dir=%2F

But then I always get

{
  "error_msg": "Feature disabled."
}

I am not sure which feature do I need to enable and how do I do that?

Thanks for your help.