RabbitMQ: ErlangCookie cannot handle prediction mode

[frlan]

If there is no .erlang.cookie-file already created, the ErlangCookie crases

ERROR: Traceback (most recent call last):
  File "/my.batou/.appenv/80e88ae5/lib/python3.10/site-packages/batou/remote_core.py", line 402, in <module>
  File "/my.batou/.appenv/80e88ae5/lib/python3.10/site-packages/batou/remote_core.py", line 366, in deploy
  File "/my.batou/.appenv/80e88ae5/lib/python3.10/site-packages/batou/remote_core.py", line 178, in deploy
  File "/remote/deployment/.appenv/33f09e0d/lib/python3.9/site-packages/batou/component.py", line 327, in deploy
    sub_component.deploy(predict_only)
  File "/remote/deployment/.appenv/33f09e0d/lib/python3.9/site-packages/batou/component.py", line 339, in deploy
    call_with_optional_args(
  File "/remote/deployment/.appenv/33f09e0d/lib/python3.9/site-packages/batou/utils.py", line 524, in call_with_optional_args
    return func(**call_kw)
  File "/remote/deployment/.appenv/33f09e0d/lib/python3.9/site-packages/batou_ext/rabbitmq.py", line 43, in verify
    with open(self.path, 'r') as target:
FileNotFoundError: [Errno 2] No such file or directory: '/remote/.erlang.cookie'