packer build failed for virtualbox

[narendravema]

packer build -force boxes/devops-ubuntu-18.04-virtualbox.json
build is not moving beyond this point:

==> virtualbox-iso: Waiting 20s for boot...
==> virtualbox-iso: Typing the boot command...
==> virtualbox-iso: Using ssh communicator to connect: 127.0.0.1
==> virtualbox-iso: Waiting for SSH to become available...

When I logged into the host, I see this error

Execution of preseeded command "in-target apt-get ..........................linux-cloud-tools-virtual-lts-xenial;" failed with exit code 100.