runtime error

Exit code: 1. Reason: [E 2024-11-26 14:01:10.692 JupyterHub app:3912] Traceback (most recent call last): File "/usr/local/lib/python3.10/dist-packages/jupyterhub/app.py", line 3909, in launch_instance_async await self.initialize(argv) File "/usr/local/lib/python3.10/dist-packages/jupyterhub/app.py", line 3344, in initialize self.load_config_file(self.config_file) File "/usr/local/lib/python3.10/dist-packages/traitlets/config/application.py", line 118, in inner return method(app, *args, **kwargs) File "/usr/local/lib/python3.10/dist-packages/traitlets/config/application.py", line 958, in load_config_file for config, fname in self._load_config_files( File "/usr/local/lib/python3.10/dist-packages/traitlets/config/application.py", line 915, in _load_config_files config = loader.load_config() File "/usr/local/lib/python3.10/dist-packages/traitlets/config/loader.py", line 622, in load_config self._read_file_as_dict() File "/usr/local/lib/python3.10/dist-packages/traitlets/config/loader.py", line 655, in _read_file_as_dict exec(compile(f.read(), conf_filename, "exec"), namespace, namespace) # noqa: S102 File "/srv/jupyterhub/jupyterhub_config.py", line 22, in <module> network_name = os.environ["DOCKER_NETWORK_NAME"] File "/usr/lib/python3.10/os.py", line 680, in __getitem__ raise KeyError(key) from None KeyError: 'DOCKER_NETWORK_NAME'

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