[hazward@T470 ~]$ beet aura
Traceback (most recent call last):
  File "/usr/bin/beet", line 11, in <module>
    load_entry_point('beets==1.4.5', 'console_scripts', 'beet')()
  File "/usr/lib/python3.6/site-packages/beets/ui/__init__.py", line 1256, in main
    _raw_main(args)
  File "/usr/lib/python3.6/site-packages/beets/ui/__init__.py", line 1243, in _raw_main
    subcommand.func(lib, suboptions, subargs)
  File "/home/admin/beets/myplugins/aura.py", line 327, in func
    debug=opts.debug, threaded=True)
  File "/usr/lib/python3.6/site-packages/flask/app.py", line 841, in run
    run_simple(host, port, self, **options)
  File "/usr/lib/python3.6/site-packages/werkzeug/serving.py", line 739, in run_simple
    inner()
  File "/usr/lib/python3.6/site-packages/werkzeug/serving.py", line 699, in inner
    fd=fd)
  File "/usr/lib/python3.6/site-packages/werkzeug/serving.py", line 587, in make_server
    passthrough_errors, ssl_context, fd=fd)
  File "/usr/lib/python3.6/site-packages/werkzeug/serving.py", line 498, in __init__
    self.address_family = select_ip_version(host, port)
  File "/usr/lib/python3.6/site-packages/werkzeug/serving.py", line 481, in select_ip_version
    if ':' in host and hasattr(socket, 'AF_INET6'):
TypeError: argument of type 'method' is not iterable
[hazward@T470 ~]$