Comment 6 for bug 1993257

I'm still not sure what's going on - now the UI crash reappears (still working on the same system with the same installation data)...

generating crash report
report saved to /var/crash/1666084828.321582079.ui.crash
Traceback (most recent call last):
  File "/snap/subiquity/3977/usr/lib/python3.8/runpy.py", line 194, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/snap/subiquity/3977/usr/lib/python3.8/runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "/snap/subiquity/3977/lib/python3.8/site-packages/subiquity/__main__.py", line 5, in <module>
    sys.exit(main())
  File "/snap/subiquity/3977/lib/python3.8/site-packages/subiquity/cmd/tui.py", line 150, in main
    subiquity_interface.run()
  File "/snap/subiquity/3977/lib/python3.8/site-packages/subiquity/client/client.py", line 407, in run
    super().run()
  File "/snap/subiquity/3977/lib/python3.8/site-packages/subiquitycore/tui.py", line 381, in run
    super().run()
  File "/snap/subiquity/3977/lib/python3.8/site-packages/subiquitycore/core.py", line 135, in run
    raise exc
  File "/snap/subiquity/3977/lib/python3.8/site-packages/subiquity/client/controllers/filesystem.py", line 245, in _guided_choice
    self.model.load_server_data(status)
  File "/snap/subiquity/3977/lib/python3.8/site-packages/subiquity/models/filesystem.py", line 1092, in load_server_data
    self._actions = self._actions_from_config(
  File "/snap/subiquity/3977/lib/python3.8/site-packages/subiquity/models/filesystem.py", line 1223, in _actions_from_config
    for action in config:
TypeError: 'NoneType' object is not iterable
Connection to s1lp15 closed.

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   │ Sorry, the installer has restarted because of an error. │
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   │ If you want to help improve the installer, you can send an error │
   │ report. │
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   │ Select continue to try the installation again. │
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   └─────────────────────────────────────────────────────────────────────┘

 2022-10-18 09:20:14,450 INFO subiquity/Filesystem:107 start: starting UI
 2022-10-18 09:20:28,320 DEBUG subiquity.models.filesystem:1084 load_server_data
 StorageResponse(status=<ProbeStatus.PROBING: 1>, error_report=None, bootloader=
None, orig_config=None, config=None, blockdev=None, dasd=None, storage_version=1)
 2022-10-18 09:20:28,321 DEBUG subiquity.common.errorreport:384 generating crash report
 2022-10-18 09:20:28,326 INFO subiquity.common.errorreport:406 saving crash report 'Installer UI
crashed with TypeError' to /var/crash/1666084828.321582079.ui.crash
 2022-10-18 09:20:28,326 INFO subiquity/ErrorReporter/1666084828.321582079.ui/add_info:107 start:
InstallerLogInfo: