Comment 6 for bug 1526267

root@xubuntu:/tmp# update-apt-xapian-index --update
ERROR:root:DebFileApplication import
Traceback (most recent call last):
  File "/usr/share/software-center/softwarecenter/db/__init__.py", line 4, in <module>
    from debfile import DebFileApplication, DebFileOpenError
ImportError: No module named 'debfile'
Traceback (most recent call last):
  File "/usr/sbin/update-apt-xapian-index", line 104, in <module>
    if not indexer.setupIndexing(force=opts.force, system=opts.pkgfile is None):
  File "/usr/lib/python3/dist-packages/axi/indexer.py", line 474, in setupIndexing
    self.plugins = Plugins(progress=self.progress, system=system)
  File "/usr/lib/python3/dist-packages/axi/indexer.py", line 98, in __init__
    addon = Addon(fullname, **kw)
  File "/usr/lib/python3/dist-packages/axi/indexer.py", line 53, in __init__
    self.module = imp.load_source("axi.plugin_" + self.name, fname)
  File "/usr/lib/python3.5/imp.py", line 172, in load_source
    module = _load(spec)
  File "<frozen importlib._bootstrap>", line 693, in _load
  File "<frozen importlib._bootstrap>", line 673, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 662, in exec_module
  File "<frozen importlib._bootstrap>", line 222, in _call_with_frames_removed
  File "/usr/share/apt-xapian-index/plugins/software_center.py", line 13, in <module>
    from softwarecenter.db.update import (
  File "/usr/share/software-center/softwarecenter/db/update.py", line 33, in <module>
    from softwarecenter.backend.scagent import SoftwareCenterAgent
  File "/usr/share/software-center/softwarecenter/backend/scagent.py", line 26, in <module>
    from spawn_helper import SpawnHelper
ImportError: No module named 'spawn_helper'