ash.avalanche.ash_cli fails when ash_cli_custom_networks = {}

[leopaul36]

TASK [ash.avalanche.ash_cli : include_tasks] *************************************************************************************************
fatal: [validator01]: FAILED! =>
  msg: |-
    Unable to look up a name or access an attribute in template string ({{ ash_cli_custom_networks | dict2items }}).
    Make sure your variable name does not contain invalid characters like '-': dict2items requires a dictionary, got <class 'ansible.template.AnsibleUndefined'> instead.. dict2items requires a dictionary, got <class 'ansible.template.AnsibleUndefined'> instead.. Unable to look up a name or access an attribute in template string ({{ ash_cli_custom_networks | dict2items }}).
    Make sure your variable name does not contain invalid characters like '-': dict2items requires a dictionary, got <class 'ansible.template.AnsibleUndefined'> instead.. dict2items requires a dictionary, got <class 'ansible.template.AnsibleUndefined'> instead.

PLAY RECAP ***********************************************************************************************************************************
validator01                : ok=33   changed=23   unreachable=0    failed=1    skipped=10   rescued=0    ignored=0