Crash in 21.10 installation if lvm groups is unchecked and subsequent crash when reporting to Canonical

[Gabriel]

I was testing the Ubuntu 21.10 ARM server image on QEMU, and hit two bugs. Searched the reports but could not find either of them.

Link to the iso: https://cdimage.ubuntu.com/releases/21.10/release/ubuntu-21.10-live-server-arm64.iso

The SHA256 matches.

The first crash happened when I unchecked the LVM group option on the disk settings.

connecting...
waiting for cloud-init...
generating crash report
report saved to /var/crash/1644069599.816040754.ui.crash
Traceback (most recent call last):
  File "/snap/subiquity/2824/usr/bin/subiquity", line 8, in <module>
    sys.exit(main())
  File "/snap/subiquity/2824/lib/python3.8/site-packages/subiquity/cmd/tui.py", line 144, in main
    subiquity_interface.run()
  File "/snap/subiquity/2824/lib/python3.8/site-packages/subiquity/client/client.py", line 402, in run
    super().run()
  File "/snap/subiquity/2824/lib/python3.8/site-packages/subiquitycore/tui.py", line 374, in run
    super().run()
  File "/snap/subiquity/2824/lib/python3.8/site-packages/subiquitycore/core.py", line 135, in run
    raise exc
  File "/snap/subiquity/2824/lib/python3.8/site-packages/subiquity/client/controllers/filesystem.py", line 211, in _guided_choice
    self.model.load_server_data(status)
  File "/snap/subiquity/2824/lib/python3.8/site-packages/subiquity/models/filesystem.py", line 952, in load_server_data
    self._actions = self._actions_from_config(
  File "/snap/subiquity/2824/lib/python3.8/site-packages/subiquity/models/filesystem.py", line 1083, in _actions_from_config
    for action in config:
TypeError: 'NoneType' object is not iterable

Then I selected the option to report the crash to Canonical and hit another bug.

Ubuntu 21.10 ubuntu-server ttyAMA0

report to canonical =>

connecting...
generating crash report
report saved to /var/crash/1644069638.135836363.ui.crashTraceback (most recent call last):
  File "/snap/subiquity/2824/usr/bin/subiquity", line 8, in <module>
    sys.exit(main())
  File "/snap/subiquity/2824/lib/python3.8/site-packages/subiquity/cmd/tui.py", line 144, in main
    subiquity_interface.run()
  File "/snap/subiquity/2824/lib/python3.8/site-packages/subiquity/client/client.py", line 402, in run
    super().run()
  File "/snap/subiquity/2824/lib/python3.8/site-packages/subiquitycore/tui.py", line 374, in run
    super().run()
  File "/snap/subiquity/2824/lib/python3.8/site-packages/subiquitycore/core.py", line 135, in run
    raise exc
  File "/snap/subiquity/2824/usr/lib/python3.8/asyncio/events.py", line 81, in _run
    self._context.run(self._callback, *self._args)
  File "/snap/subiquity/2824/lib/python3.8/site-packages/subiquitycore/async_helpers.py", line 26, in _done
    fut.result()
  File "/snap/subiquity/2824/lib/python3.8/site-packages/subiquity/common/errorreport.py", line 243, in upload
    oops_id = await run_in_thread(_bg_upload)
  File "/snap/subiquity/2824/lib/python3.8/site-packages/subiquitycore/async_helpers.py", line 46, in run_in_thread
    return await loop.run_in_executor(None, func, *args)
  File "/snap/subiquity/2824/usr/lib/python3.8/concurrent/futures/thread.py", line 57, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/snap/subiquity/2824/lib/python3.8/site-packages/subiquity/common/errorreport.py", line 230, in _bg_upload
    data = bson.BSON().encode(for_upload)
AttributeError: module 'bson' has no attribute 'BSON'

Checking LVM again made the installation continue as expected.