forem Install Error: Transpile Butane YAML into JSON

TASK [butane : Copy Butane YAML into temporary file] *******************************************************************************************************************
changed: [forem]

TASK [butane : Transpile Butane YAML into JSON] ************************************************************************************************************************
fatal: [forem]: FAILED! => changed=true
  cmd: |-
    butane  --strict "/tmp/butane_input_ajt1wc2f.bu"
  delta: '0:00:00.061281'
  end: '2021-07-18 00:11:02.752356'
  msg: non-zero return code
  rc: 1
  start: '2021-07-18 00:11:02.691075'
  stderr: 'Error translating config: Error unmarshaling yaml: yaml: line 501: found character that cannot start any token'
  stderr_lines: <omitted>
  stdout: ''
  stdout_lines: <omitted>

PLAY RECAP *************************************************************************************************************************************************************
forem                      : ok=14   changed=4    unreachable=0    failed=1    skipped=1    rescued=0    ignored=0
- name: Copy Butane YAML into temporary file
  ansi- name: Transpile Butane YAML into JSON
  ansible.builtin.shell: |
    butane  --strict "{{ butane_temp_input_file.path }}"
  args:
    executable: /bin/bash
  register: butane_transpiled_ignition_json
task path: /var/home/core/selfhost/roles/butane/tasks/butane.yml:26
<forem> ESTABLISH LOCAL CONNECTION FOR USER: core
<forem> EXEC /bin/sh -c 'echo ~core && sleep 0'
<forem> EXEC /bin/sh -c '( umask 77 && mkdir -p "` echo /var/home/core/.ansible/tmp `"&& mkdir "` echo /var/home/core/.ansible/tmp/ansible-tmp-1626568627.02572-3630-156247917244110 `" && echo ansible-tmp-1626568627.02572-3630-156247917244110="` echo /var/home/core/.ansible/tmp/ansible-tmp-1626568627.02572-3630-156247917244110 `" ) && sleep 0'
Using module file /var/home/core/.local/lib/python3.9/site-packages/ansible/modules/command.py
<forem> PUT /var/home/core/.ansible/tmp/ansible-local-34470mm69b8p/tmp2b46wd4o TO /var/home/core/.ansible/tmp/ansible-tmp-1626568627.02572-3630-156247917244110/AnsiballZ_command.py
<forem> EXEC /bin/sh -c 'chmod u+x /var/home/core/.ansible/tmp/ansible-tmp-1626568627.02572-3630-156247917244110/ /var/home/core/.ansible/tmp/ansible-tmp-1626568627.02572-3630-156247917244110/AnsiballZ_command.py && sleep 0'
<forem> EXEC /bin/sh -c '/usr/bin/python3 /var/home/core/.ansible/tmp/ansible-tmp-1626568627.02572-3630-156247917244110/AnsiballZ_command.py && sleep 0'
<forem> EXEC /bin/sh -c 'rm -f -r /var/home/core/.ansible/tmp/ansible-tmp-1626568627.02572-3630-156247917244110/ > /dev/null 2>&1 && sleep 0'
fatal: [forem]: FAILED! => changed=true
  cmd: |-
    butane  --strict "/tmp/butane_input_j_o0qcjf.bu"
  delta: '0:00:00.013172'
  end: '2021-07-18 00:37:07.312244'
  invocation:
    module_args:
      _raw_params: |-
        butane  --strict "/tmp/butane_input_j_o0qcjf.bu"
      _uses_shell: true
      argv: null
      chdir: null
      creates: null
      executable: /bin/bash
      removes: null
      stdin: null
      stdin_add_newline: true
      strip_empty_ends: true
      warn: false
  msg: non-zero return code
  rc: 1
  start: '2021-07-18 00:37:07.299072'
  stderr: 'Error translating config: Error unmarshaling yaml: yaml: line 501: found character that cannot start any token'
  stderr_lines: <omitted>
  stdout: ''
  stdout_lines: <omitted>

How to install butane libvirt qemu virt and podman in Fedora CoreOS?

sudo rpm-ostree install butane
sudo  rpm-ostree install libvirt-client libvirt-nss 
sudo  rpm-ostree install --idempotent qemu-system-aarch64
sudo  rpm-ostree install --idempotent virt-manager virt-install virt-viewer
sudo  rpm-ostree install --idempotent podman
sudo systemctl reboot