Its me, I'm back with another error...
following the Esoterical can guide for flashing the mainboard with Klipper via Katapult via USB and getting the above error.
I do not end up with can0 available after or the mainboard becoming any form of CAN adapter in lsusb. Beyond that my make menuconfig file has been checked and is correct except for the fact that i am missing "(SKR SE Bx v2.0)" in the bootloader offset but i didn't have any other option so i just went with the plain 128KiB.