Access to files in folder restricted via token authentication

[Beebeeoii]

Summary:

There appears to be a weird issue where a API token (generated by Canvas) is forbidden to access files in some folders, but granted access when the user logs in normally via the website.

Steps to reproduce:

1. With a token, access the endpoint /api/v1/folders/{folderID}/files
2. Greeted with the following response:

{
    "status": "unauthorized",
    "errors": [
        {
            "message": "user not authorised to perform that action"
        }
    ]
}

Expected behavior:

The files within the folder should be visible, since it is if the user was to log in normally.

Actual behavior:

Greeted with an error 403.

Additional notes: