Packer build ubuntu arm64 image

Hello,

we will build with packer / qemu an ubuntu arm64 desktop VM.
successfully we build a ubuntu amd64 version with packer like these documentation.
QEMU - Builders | Packer by HashiCorp - it works

Now we only changing the iso File to arm64 Version and would like to start the building again. But now we getting some errors about these build:

We see, he will starting the building with x86. exe tooling and he is missing the bios.

$ packer version
Packer v1.7.8

2022/01/19 10:31:27 packer.exe plugin: Qemu version: 5.2.0
==> qemu.ubuntu-server: Starting VM, booting from CD-ROM
==> qemu.ubuntu-server: Overriding default Qemu arguments with qemuargs template option…
2022/01/19 10:31:27 packer.exe plugin: Qemu Builder has no floppy files, not attaching a floppy.
2022/01/19 10:31:27 packer.exe plugin: Executing C:\Program Files\qemu\qemu-system-x86_64.exe: string{"-netdev", “user,id=user.0,hostfwd=tcp::3302-:22”, “-boot”, “once=d”, “-machine”, “type=pc,accel=tcg”, “-display”, “gtk”, “-device”, “virtio-net,netdev=user.0”, “-smp”, “4”, “-drive”, “file=output\live-server\road.ntg7.fup3.full-1.0-arm64,if=virtio,cache=writeback,discard=ignore,format=qcow2”, “-drive”, “file=C:/GitRepo/road-kit-adk/work/focal-desktop-arm64.iso,media=cdrom”, “-name”, “road.ntg7.fup3.full-1.0-arm64”, “-vnc”, “127.0.0.1:90”, “-m”, “8192M”}
2022/01/19 10:31:27 packer.exe plugin: Started Qemu. Pid: 3404
2022/01/19 10:31:27 packer.exe plugin: Qemu stderr: Could not open option rom ‘kvmvapic.bin’: No such file or directory
2022/01/19 10:31:27 packer.exe plugin: Qemu stderr: C:\Program Files\qemu\qemu-system-x86_64.exe: failed to find romfile “vgabios-stdvga.bin”
==> qemu.ubuntu-server: Error launching VM: Qemu failed to start. Please run with PACKER_LOG=1 to get more info.
2022/01/19 10:31:27 packer.exe plugin: failed to unlock port lockfile: close tcp 127.0.0.1:5990: use of closed network connection
==> qemu.ubuntu-server: Deleting output directory…
2022/01/19 10:31:27 packer.exe plugin: failed to unlock port lockfile: close tcp 127.0.0.1:3302: use of closed network connection
Build ‘qemu.ubuntu-server’ errored after 6 seconds 806 milliseconds: Build was halted.
2022/01/19 10:31:27 [INFO] (telemetry) ending qemu.ubuntu-server
==> Wait completed after 6 seconds 806 milliseconds
2022/01/19 10:31:27 machine readable: error-count string{“1”