Building Virtualbox freebsd-11 fails

[elhigu]

Any idea why VirtualBox is failing during starting image to build?

Mikaels-MacBook-Pro-2:temp mikaelle$ ~/mytools/packer build freebsd-11.1-amd64.json 
qemu output will be in this color.
virtualbox-iso output will be in this color.
vmware-iso output will be in this color.

Warnings for build 'vmware-iso':

* Your vmx data contains the following variable(s), which Packer normally sets when it generates its own default vmx template. This may cause your build to fail or behave unpredictably: numvcpus, memsize

==> virtualbox-iso: Retrieving ISO
Build 'qemu' errored: Failed creating Qemu driver: exec: "qemu-system-x86_64": executable file not found in $PATH
Build 'vmware-iso' errored: Failed creating VMware driver: Unable to initialize any driver for this platform. The errors
from each driver are shown below. Please fix at least one driver
to continue:
* Fusion application not found at path: /Applications/VMware Fusion.app
* Fusion application not found at path: /Applications/VMware Fusion.app

1 items:  690.17 MiB / 690.17 MiB [===========================================================================================================================================================================================================================] 3m7s
    virtualbox-iso: Transferred: http://ftp.freebsd.org/pub/FreeBSD/releases/ISO-IMAGES/11.1/FreeBSD-11.1-RELEASE-amd64-disc1.iso
==> virtualbox-iso: Starting HTTP server on port 8558
==> virtualbox-iso: Creating virtual machine...
==> virtualbox-iso: Creating hard drive...
==> virtualbox-iso: Creating forwarded port mapping for communicator (SSH, WinRM, etc) (host port 4310)
==> virtualbox-iso: Executing custom VBoxManage commands...
    virtualbox-iso: Executing: modifyvm packer-freebsd-11.1-amd64 --memory 512
    virtualbox-iso: Executing: modifyvm packer-freebsd-11.1-amd64 --cpus 1
==> virtualbox-iso: Starting the virtual machine...
==> virtualbox-iso: Error starting VM: VBoxManage error: VBoxManage: error: The virtual machine 'packer-freebsd-11.1-amd64' has terminated unexpectedly during startup with exit code 1 (0x1)
==> virtualbox-iso: VBoxManage: error: Details: code NS_ERROR_FAILURE (0x80004005), component MachineWrap, interface IMachine
==> virtualbox-iso: Deregistering and deleting VM...
==> virtualbox-iso: Deleting output directory...
Build 'virtualbox-iso' errored: Error starting VM: VBoxManage error: VBoxManage: error: The virtual machine 'packer-freebsd-11.1-amd64' has terminated unexpectedly during startup with exit code 1 (0x1)
VBoxManage: error: Details: code NS_ERROR_FAILURE (0x80004005), component MachineWrap, interface IMachine

==> Some builds didn't complete successfully and had errors:
--> qemu: Failed creating Qemu driver: exec: "qemu-system-x86_64": executable file not found in $PATH
--> vmware-iso: Failed creating VMware driver: Unable to initialize any driver for this platform. The errors
from each driver are shown below. Please fix at least one driver
to continue:
* Fusion application not found at path: /Applications/VMware Fusion.app
* Fusion application not found at path: /Applications/VMware Fusion.app

--> virtualbox-iso: Error starting VM: VBoxManage error: VBoxManage: error: The virtual machine 'packer-freebsd-11.1-amd64' has terminated unexpectedly during startup with exit code 1 (0x1)
VBoxManage: error: Details: code NS_ERROR_FAILURE (0x80004005), component MachineWrap, interface IMachine

==> Builds finished but no artifacts were created.
Mikaels-MacBook-Pro-2:temp mikaelle$