V412loopback - Error while installing

I am trying to install v412loopback following these instructions

this is what i get

modprobe: ERROR: could not insert ‘v4l2loopback’: Exec format error

maybe the below sheds more light??

sherab@sherab-librem:~/v4l2loopback$ sudo modinfo v4l2loopback
filename:       /lib/modules/4.19.0-5-amd64/extra/v4l2loopback.ko
license:        GPL
author:         Vasily Levin, IOhannes m zmoelnig <zmoelnig@iem.at>,Stefan Diewald,Anton Novikovet al.
description:    V4L2 loopback video device
depends:        videodev
retpoline:      Y
name:           v4l2loopback
vermagic:       4.19.0-5-amd64 SMP mod_unload modversions 
parm:           debug:debugging level (higher values == more verbose) (int)
parm:           max_buffers:how many buffers should be allocated (int)
parm:           max_openers:how many users can open loopback device (int)
parm:           devices:how many devices should be created (int)
parm:           video_nr:video device numbers (-1=auto, 0=/dev/video0, etc.) (array of int)
parm:           card_label:card labels for every device (array of charp)
parm:           exclusive_caps:whether to announce OUTPUT/CAPTURE capabilities exclusively or not (array of bool)
parm:           max_width:maximum frame width (int)
parm:           max_height:maximum frame height (int)

any suggestions

You are trying to build and install the package from source?

It is my understanding that the package v412loopback is available in PureOS Amber