Download/Upload Speed Test giving "Error Tansfer Failed" on D-Link router

I am getting error transferred failed when i try to do upload/download speed test on my D-Link router< what can be the possible reasons for it ?
These are the parameters i am using for Download Speed Test:

InternetGatewayDevice.DownloadDiagnostics
InternetGatewayDevice.DownloadDiagnostics.BOMTime 9/18/2025, 7:16:42 PM
InternetGatewayDevice.DownloadDiagnostics.DSCP 0
InternetGatewayDevice.DownloadDiagnostics.DiagnosticsState Error_TransferFailed
InternetGatewayDevice.DownloadDiagnostics.DownloadURL https://nbg1-speed.hetzner.com/100MB.bin
InternetGatewayDevice.DownloadDiagnostics.EOMTime 9/18/2025, 7:16:52 PM
InternetGatewayDevice.DownloadDiagnostics.EthernetPriority 0
InternetGatewayDevice.DownloadDiagnostics.Interface InternetGatewayDevice.WANDevice.1.WANConnectionDevice.1.WANIPConnection.1
InternetGatewayDevice.DownloadDiagnostics.ROMTime 9/18/2025, 7:16:42 PM
InternetGatewayDevice.DownloadDiagnostics.TCPOpenRequestTime 9/18/2025, 7:16:42 PM
InternetGatewayDevice.DownloadDiagnostics.TCPOpenResponseTime 9/18/2025, 7:16:42 PM
InternetGatewayDevice.DownloadDiagnostics.TestBytesReceived 0
InternetGatewayDevice.DownloadDiagnostics.TotalBytesReceived 1822575285

These are the parameters I am using for Upload Speed Test:

InternetGatewayDevice.UploadDiagnostics
InternetGatewayDevice.UploadDiagnostics.BOMTime 9/16/2025, 9:08:55 PM
InternetGatewayDevice.UploadDiagnostics.DSCP 0
InternetGatewayDevice.UploadDiagnostics.DiagnosticsState Error_NoTransferComplete
InternetGatewayDevice.UploadDiagnostics.EOMTime 9/16/2025, 9:09:06 PM
InternetGatewayDevice.UploadDiagnostics.EthernetPriority 0
InternetGatewayDevice.UploadDiagnostics.Interface
InternetGatewayDevice.UploadDiagnostics.ROMTime 9/16/2025, 9:08:55 PM
InternetGatewayDevice.UploadDiagnostics.TCPOpenRequestTime 9/16/2025, 9:08:55 PM
InternetGatewayDevice.UploadDiagnostics.TCPOpenResponseTime 9/16/2025, 9:08:55 PM
InternetGatewayDevice.UploadDiagnostics.TestFileLength 0
InternetGatewayDevice.UploadDiagnostics.TotalBytesSent 0
InternetGatewayDevice.UploadDiagnostics.UploadURL http://dlptest.com/http-post/

Kindly please help me with this

You will need to look at the logs on your CPE to figure out what the issue is.

got it thanks