Next packer config fails to scp basicconfig.sh (https://github.com/hashicorp/packer/issues/6151)

ubuntu.json

{
  "variables": {
    "ssh_username": "vagrant",
    "ssh_password": "vagrant",
    "iso_checksum_md5": "6a7f31eb125a0b2908cf2333d7777c82",
    "user_home":"/home/vagrant",
    "image_description": ""
  },
  "provisioners": [
    {
      "type": "file",
      "source": "scripts/common.sh",
      "destination": "{{ user `user_home` }}/common.sh"
    },
    {
      "type": "shell",
      "execute_command": "echo '{{ user `ssh_password` }}' | {{.Vars}} sudo -S -E bash -eux '{{.Path}}'",
      "scripts": [
        "scripts/basicconfig.sh"
      ]
    },
  ],
  "builders": [
    {
      "type": "hyperv-vmcx",
      "clone_from_vm_name": "gen2",
      "ssh_username": "{{ user `ssh_username` }}",
      "ssh_password": "{{ user `ssh_password` }}",
      "shutdown_command": "echo '{{ user `ssh_password` }}' | sudo -S shutdown -P now",
      "http_directory": "http",
      "communicator":"ssh",
      "ssh_timeout" : "1h",
      "cpu": "1",
      "ram_size": "2048",
      "enable_secure_boot": false
    },
  ]
}