The device cannot be assigned to a virtual machine as the firmware (BIOS or UEFI) on this host computer system indicates ...

The device cannot be assigned to a virtual machine as the firmware (BIOS or UEFI) on this host computer system indicates that the device must remain in contact with the firmware running in the host.  The device can only be used in the management operating system.  You should contact your OEM to determine if a firmware upgrade is available, or if the PCI Express device can be reconfigured to be independent of the host firmware.