nuvlabox_add_ssh_key job failed after NB restart

[konstan]

User restarted the NB and how sees this error message on the NB page.

ContainerError-Traceback (most recent call last):
  File "/usr/local/lib/python3.8/site-packages/nuvla/job/executor/executor.py", line 70, in _process_jobs
    return_code = action_instance.do_work()
  File "/usr/local/lib/python3.8/site-packages/nuvla/job/actions/nuvlabox_add_ssh_key.py", line 54, in do_work
    return self.add_ssh_key()
  File "/usr/local/lib/python3.8/site-packages/nuvla/job/actions/nuvlabox_add_ssh_key.py", line 38, in add_ssh_key
    r = connector.nuvlabox_manage_ssh_key('add-ssh-key', pubkey)
  File "/usr/local/lib/python3.8/site-packages/nuvla/connector/connector.py", line 15, in wrapper
    raise e
  File "/usr/local/lib/python3.8/site-packages/nuvla/connector/connector.py", line 13, in wrapper
    result = f(self, *f_args, **f_kwargs)
  File "/usr/local/lib/python3.8/site-packages/nuvla/connector/nuvlabox_connector.py", line 225, in nuvlabox_manage_ssh_key
    r = docker.from_env().containers.run(
  File "/usr/local/lib/python3.8/site-packages/docker/models/containers.py", line 848, in run
    raise ContainerError(
docker.errors.ContainerError: Command 'sh -c 'echo -e "${SSH_PUB}" >> /rootfs//home/pi/.ssh/authorized_keys && echo Success'' in image 'alpine' returned non-zero exit status 1: b"sh: can't create /rootfs//home/pi/.ssh/authorized_keys: nonexistent directory\n"