Error to add --debug

[Vctrsnts]

Hi,

If use the option arguments --debug, the podcats broken with this error:

user@debian:/podcast# podcats --host 192.0.0.2 --port 5555 --title MyPodcast serve /podcast/
Welcome to the Podcats web server!

Your podcast feed is available at:

        http://192.0.0.2:5555

The web interface is available at

        http://192.0.0.2:5555/web

 * Serving Flask app 'podcats'
 * Debug mode: on
Traceback (most recent call last):
  File "/usr/bin/podcats", line 33, in <module>
    sys.exit(load_entry_point('podcats==0.6.3', 'console_scripts', 'podcats')())
  File "/usr/lib64/python3.9/site-packages/podcats/__init__.py", line 274, in main
    serve(channel)
  File "/usr/lib64/python3.9/site-packages/podcats/__init__.py", line 248, in serve
    server.run(host=channel.host, port=channel.port, debug=channel.debug, threaded=True)
  File "/usr/lib64/python3.9/site-packages/flask/app.py", line 662, in run
    run_simple(t.cast(str, host), port, self, **options)
  File "/usr/lib64/python3.9/site-packages/werkzeug/serving.py", line 1083, in run_simple
    application = DebuggedApplication(application, evalex=use_evalex)
  File "/usr/lib64/python3.9/site-packages/werkzeug/debug/__init__.py", line 291, in __init__
    self._failed_pin_auth = Value("B")
  File "/usr/lib64/python3.9/multiprocessing/context.py", line 134, in Value
    from .sharedctypes import Value
  File "/usr/lib64/python3.9/multiprocessing/sharedctypes.py", line 10, in <module>
    import ctypes
  File "/usr/lib64/python3.9/ctypes/__init__.py", line 8, in <module>
    from _ctypes import Union, Structure, Array
ImportError: libffi.so.7: cannot open shared object file: No such file or directory

But if not user the argument --debug, working perfect. At the moment