```Traceback (most recent call last):


 "main.py", line 44, in <module>

app_obj = App(debug=True)


 "main.py", line 32, in __init__

for plugin_name in self.plugin_source.list_plugins():


 "/usr/lib/python2.7/site-packages/pluginbase.py", line 257, in list_plugins

for _, modname, ispkg in pkgutil.iter_modules(self.mod.__path__):


 "/usr/lib/python2.7/site-packages/pluginbase.py", line 137, in __path__

return ps.searchpath + ps.base.searchpath
TypeError: cannot concatenate 'str' and 'list' objects

Traceback (most recent call last):


 "C:\Users\Cezary.Wagner\PycharmProjects\medptr2\sandbox\distributed\s01_distributed_farm.py", line 196, in send_heartbeat

async with session.get(f'http://{server_address.host}:{server_address.port}/heartbeat',


 "C:\Users\Cezary.Wagner\PycharmProjects\medptr2\venv\lib\site-packages\aiohttp\client.py", line 1012, in __aenter__

self._resp = await self._coro


 "C:\Users\Cezary.Wagner\PycharmProjects\medptr2\venv\lib\site-packages\aiohttp\client.py", line 480, in _request

conn = await self._connector.connect(


 "C:\Users\Cezary.Wagner\PycharmProjects\medptr2\venv\lib\site-packages\aiohttp\connector.py", line 523, in connect

proto = await self._create_connection(req, traces, timeout)


 "C:\Users\Cezary.Wagner\PycharmProjects\medptr2\venv\lib\site-packages\aiohttp\connector.py", line 858, in _create_connection

_, proto = await self._create_direct_connection(


 "C:\Users\Cezary.Wagner\PycharmProjects\medptr2\venv\lib\site-packages\aiohttp\connector.py", line 1004, in _create_direct_connection

raise last_exc


 "C:\Users\Cezary.Wagner\PycharmProjects\medptr2\venv\lib\site-packages\aiohttp\connector.py", line 980, in _create_direct_connection

transp, proto = await self._wrap_create_connection(


 "C:\Users\Cezary.Wagner\PycharmProjects\medptr2\venv\lib\site-packages\aiohttp\connector.py", line 943, in _wrap_create_connection

raise client_error(req.connection_key, exc) from exc
aiohttp.client_exceptions.ClientConnectorError: Cannot connect to host 127.0.0.1:8009 ssl:default [Połączenie nie zostało nawiązane, ponieważ w sieci istnieje duplikat nazwy. Jeśli przyłączasz się do domeny, przejdź do apletu System w Panelu sterowania, aby zmienić nazwę komputera, i spróbuj ponownie. Jeśli przyłączasz się do grupy roboczej, wybierz inną nazwę grupy]
