Nvidia Mellanox , Cumulus Linux 5.5 Error

I am Configuring a Nvida Mellanox switch using cumulus linux 5.5 and when I try to up a port for e.g swp1 using ifup swp1 it says main exception: cannot find interfaces swp1, it goes up by using ifconfig but not by ifup and I cant ping the connection.

Any help please
Regards