Traceback (most recent call last):
  File "/app/.venv/lib/python3.14/site-packages/paramiko/hostkeys.py", line 357, in from_line
    key_bytes = decodebytes(b(key))
  File "/usr/local/lib/python3.14/base64.py", line 586, in decodebytes
    return binascii.a2b_base64(s)
           ~~~~~~~~~~~~~~~~~~~^^^
binascii.Error: Incorrect padding

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/app/src/slices_monitor_test_runner/test_runners/test_runner_base.py", line 175, in step
    yield
  File "/app/src/slices_monitor_test_runner/test_runners/test_runner_base.py", line 272, in step_with_retry
    target()
    ~~~~~~^^
  File "/app/src/slices_monitor_test_runner/test_runners/slices_singlenode_login.py", line 1390, in <lambda>
    lambda: self.test_ssh(
            ~~~~~~~~~~~~~^
        ssh_host,
        ^^^^^^^^^
    ...<7 lines>...
        None,
        ^^^^^
    ),
    ^
  File "/app/src/slices_monitor_test_runner/test_runners/slices_singlenode_login.py", line 121, in test_ssh
    host_key_entry = HostKeyEntry.from_line(f"{kh_key} {proxy_openssh_pubkey}")
  File "/app/.venv/lib/python3.14/site-packages/paramiko/hostkeys.py", line 359, in from_line
    raise InvalidHostKey(line, e)
paramiko.hostkeys.InvalidHostKey: ('5.53.108.174 ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABgQDszomICuOvrlET6/XeU2t2UQ5IVjyG2itwJRE1gTEdc7E8We7CfVEAAAIMsNxHQHDHlJgS6hFIoxBVlEuzEnVOMjYCHVJKY+/GSW58Q+KUDi+FL9ojlDY94JZ3DOsoWyQOqs0IYJuqJlhbU+bCrTaJAbRljGd9KEpd0TeuRKWfihinXZeaAhoBOHHNwG6reKh7sV7QgR6ZfnPRQZBzlLuejlf+GobQFiSTxqWhlsKKFhzbVd8veljqXLdY4XkNIWj8OdSjw9+HMb7bXkUbXIXWtA4+wHVUcP+0pq0IPI9+X4dGh+0Edb+fDQDS+lEJPfH5byU+YWuGOxFDCVv2p1FxwOtfN36Nnc6hEoAwVVnx7tZ0dxWVDzLlHB8mozsthds+ww3fD8xF+V5OKi2SZ0ogCzgklqSyqNu+QLxARgUsywbGF8lCIv6liGBtCMb+/Yd9aGsyNL7e4ejgGjkBHI/xgcddjOI7XlXeRohi6QnbunnwNGdKGyDxzGBSPSWjNvK/mxPX7bAGdet4UM=', Error('Incorrect padding'))