Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/aptdaemon/worker.py", line 215, in _process_transaction
    self.commit_packages(trans, *trans.packages)
  File "/usr/lib/python2.7/dist-packages/aptdaemon/worker.py", line 276, in commit_packages
    self._apply_changes(trans)
  File "/usr/lib/python2.7/dist-packages/aptdaemon/worker.py", line 914, in _apply_changes
    self._cache.commit(fetch_progress, inst_progress)
  File "/usr/lib/python2.7/dist-packages/apt/deprecation.py", line 98, in deprecated_function
    return func(*args, **kwds)
  File "/usr/lib/python2.7/dist-packages/apt/cache.py", line 436, in commit
    res = self.install_archives(pm, install_progress)
  File "/usr/lib/python2.7/dist-packages/apt/deprecation.py", line 98, in deprecated_function
    return func(*args, **kwds)
  File "/usr/lib/python2.7/dist-packages/apt/cache.py", line 403, in install_archives
    install_progress.finish_update()
  File "/usr/lib/python2.7/dist-packages/aptdaemon/progress.py", line 266, in finish_update
    lock.wait_for_lock(lock.status_lock)
  File "/usr/lib/python2.7/dist-packages/aptdaemon/lock.py", line 171, in wait_for_lock
    msg = trans.gettext("Waiting for %s to exit")
AttributeError: 'FileLock' object has no attribute 'gettext'