bzexport error

** unknown exception encountered, please report by visiting
** https://mercurial-scm.org/wiki/BugTracker
** Python 2.7.12+ (default, Sep 17 2016, 12:08:02) [GCC 6.2.0 20160914]
** Mercurial Distributed SCM (version 3.9.1)
** Extensions loaded: color, pager, histedit, rebase, blackbox, firefoxtree, reviewboard, bzexport, push-to-try, fsmonitor
Traceback (most recent call last):
  File "/usr/bin/hg", line 45, in <module>
    mercurial.dispatch.run()
  File "/usr/lib/python2.7/dist-packages/mercurial/dispatch.py", line 59, in run
    sys.exit((dispatch(request(sys.argv[1:])) or 0) & 255)
  File "/usr/lib/python2.7/dist-packages/mercurial/dispatch.py", line 125, in dispatch
    ret = _runcatch(req)
  File "/usr/lib/python2.7/dist-packages/mercurial/dispatch.py", line 204, in _runcatch
    return _dispatch(req)
  File "/usr/lib/python2.7/dist-packages/mercurial/dispatch.py", line 880, in _dispatch
    cmdpats, cmdoptions)
  File "/usr/lib/python2.7/dist-packages/mercurial/dispatch.py", line 637, in runcommand
    ret = _runcommand(ui, options, cmd, d)
  File "/usr/lib/python2.7/dist-packages/mercurial/extensions.py", line 210, in closure
    return func(*(args + a), **kw)
  File "/usr/lib/python2.7/dist-packages/hgext/pager.py", line 160, in pagecmd
    return orig(ui, options, cmd, cmdfunc)
  File "/usr/lib/python2.7/dist-packages/mercurial/extensions.py", line 210, in closure
    return func(*(args + a), **kw)
  File "/usr/lib/python2.7/dist-packages/hgext/color.py", line 503, in colorcmd
    return orig(ui_, opts, cmd, cmdfunc)
  File "/usr/lib/python2.7/dist-packages/mercurial/dispatch.py", line 1010, in _runcommand
    return checkargs()
  File "/usr/lib/python2.7/dist-packages/mercurial/dispatch.py", line 971, in checkargs
    return cmdfunc()
  File "/usr/lib/python2.7/dist-packages/mercurial/dispatch.py", line 877, in <lambda>
    d = lambda: util.checksignature(func)(ui, *args, **cmdoptions)
  File "/usr/lib/python2.7/dist-packages/mercurial/util.py", line 1038, in check
    return func(*args, **kwargs)
  File "/home/brainbreaker/.mozbuild/version-control-tools/hgext/bzexport/__init__.py", line 1076, in bzexport
    newname = update_patch(ui, repo, rev, bug, update, rename, opts['interactive'])
  File "/home/brainbreaker/.mozbuild/version-control-tools/hgext/bzexport/__init__.py", line 642, in update_patch
    q = repo.mq
  File "/usr/lib/python2.7/dist-packages/mercurial/repoview.py", line 347, in __getattr__
    return getattr(self._unfilteredrepo, attr)
AttributeError: 'fsmonitorrepo' object has no attribute 'mq'