SharePoint REST API Request for Files not returning expected response

Hi I am hoping someone can help me.  I am getting a successful response when I request folder properties of my sharepoint folder, but not when I request the files inside. I have been following these instructions: https://learn.microsoft.com/en-us/sharepoint/dev/sp-add-ins/working-with-folders-and-files-with-rest.

STEP 1
I make the following request: GET https://mxxxxxxxxxxe.sharepoint.com/teams/gdp/_api/web/GetFolderByServerRelativeURL('IFS8')  and I receive the following response which tells me that I have 2 files in my folder which is correct

{
    "Exists": true,
    "ExistsAllowThrowForPolicyFailures": true,
    "ExistsWithException": true,
    "IsWOPIEnabled": false,
    "ItemCount": 2,
    "Name": "IFS8",
    "ProgID": null,
    "ServerRelativeUrl": "/teams/GDP/IFS8",
    "TimeCreated": "2024-03-25T08:17:06Z",
    "TimeLastModified": "2024-04-15T10:13:02Z",
    "UniqueId": "50xxxx4c-3xxx-4xx5-axx2-1adxxxxxe11f",
    "WelcomePage": ""
}

STEP 2
I append /Files to the end of the request but instead of receiving metadata about the 2 files in the folder identified in the prior request, I receive an empty array.
Request: GET https://mxxxxxxxxxxe.sharepoint.com/teams/gdp/_api/web/GetFolderByServerRelativeURL('IFS8') /Files
Response:

What am I doing wrong?