Traceback (most recent call last):
  File "/snap/hostname-desktop-installer/607/bin/subiquity/subiquity/common/api/server.py", line 122, in handler
    result = await implementation(**args)
  File "/snap/hostname-desktop-installer/607/bin/subiquity/subiquity/server/controllers/filesystem.py", line 403, in v2_GET
    return await self.get_v2_storage_response(self.model, wait)
  File "/snap/hostname-desktop-installer/607/bin/subiquity/subiquity/server/controllers/filesystem.py", line 389, in get_v2_storage_response
    probe_resp = await self._probe_response(wait, StorageResponseV2)
  File "/snap/hostname-desktop-installer/607/bin/subiquity/subiquity/server/controllers/filesystem.py", line 267, in _probe_response
    await self._start_task
AttributeError: 'FilesystemController' object has no attribute '_start_task'