DOCA Sample error: Invalid input

Hello,

I am trying to run the DOCA samples but I got the following error:

ubuntu@localhost:/opt/mellanox/doca/applications/secure_channel/bin$ sudo ./doca_secure_channel -s 256 -n 10 -p 03:00.1 -r 17:00.0
[15:25:35:603152][DOCA][ERR][COMMON:268]: Failed to create devinfo representors list. Representor devices are available only on DPU, do not run on Host
[15:25:35:603256][DOCA][ERR][SECURE_CHANNEL::Core:459]: Failed to open Comm Channel DOCA device representor based on PCI address
[15:25:35:603652][DOCA][ERR][SECURE_CHANNEL:72]: Failed to initialize endpoint: Invalid input

Do you any any idea about why I get this error?