Deluge fails to schedule torrent provided by DelugeSiphon Chrome Plugin

[megaksa]

On a fresh install of Arch Linux:

deluged 2.0.4.dev38
libtorrent: 1.2.7.0
Python: 3.8.5
OS: Linux Arch Linux

Deluge is installed on a dedicated server. When I try to schedule something from rutracker.org deluge-siphon fails to add torrent to deluge. Deluge logs from server:

Aug 02 15:30:56 site deluged[3145]: /usr/lib/python3.8/site-packages/twisted/web/_newclient.py:1673:_disconnectParser
Aug 02 15:30:56 site deluged[3145]: --- <exception caught here> ---
Aug 02 15:30:56 site deluged[3145]: /usr/lib/python3.8/site-packages/twisted/web/_newclient.py:567:connectionLost
Aug 02 15:30:56 site deluged[3145]: /usr/lib/python3.8/site-packages/twisted/web/_newclient.py:1050:dispatcher
Aug 02 15:30:56 site deluged[3145]: /usr/lib/python3.8/site-packages/twisted/web/_newclient.py:1306:_bodyDataFinished_CONNECTED
Aug 02 15:30:56 site deluged[3145]: /usr/lib/python3.8/site-packages/twisted/web/client.py:2025:connectionLost
Aug 02 15:30:56 site deluged[3145]: /usr/lib/python3.8/site-packages/deluge/httpdownloader.py:75:connectionLost
Aug 02 15:30:56 site deluged[3145]: /usr/lib/python3.8/encodings/cp1251.py:15:decode
Aug 02 15:30:56 site deluged[3145]: ]
Aug 02 15:32:33 site deluged[3145]: Traceback (most recent call last):
Aug 02 15:32:33 site deluged[3145]:   File "/usr/lib/python3.8/site-packages/twisted/web/_newclient.py", line 1050, in dispatcher
Aug 02 15:32:33 site deluged[3145]:     return func(*args, **kwargs)
Aug 02 15:32:33 site deluged[3145]:   File "/usr/lib/python3.8/site-packages/twisted/web/_newclient.py", line 1632, in _finishResponse_WAITING
Aug 02 15:32:33 site deluged[3145]:     self._giveUp(Failure(reason))
Aug 02 15:32:33 site deluged[3145]:   File "/usr/lib/python3.8/site-packages/twisted/web/_newclient.py", line 1685, in _giveUp
Aug 02 15:32:33 site deluged[3145]:     self._disconnectParser(reason)
Aug 02 15:32:33 site deluged[3145]:   File "/usr/lib/python3.8/site-packages/twisted/web/_newclient.py", line 1673, in _disconnectParser
Aug 02 15:32:33 site deluged[3145]:     parser.connectionLost(reason)
Aug 02 15:32:33 site deluged[3145]: --- <exception caught here> ---
Aug 02 15:32:33 site deluged[3145]:   File "/usr/lib/python3.8/site-packages/twisted/web/_newclient.py", line 567, in connectionLost
Aug 02 15:32:33 site deluged[3145]:     self.response._bodyDataFinished()
Aug 02 15:32:33 site deluged[3145]:   File "/usr/lib/python3.8/site-packages/twisted/web/_newclient.py", line 1050, in dispatcher
Aug 02 15:32:33 site deluged[3145]:     return func(*args, **kwargs)
Aug 02 15:32:33 site deluged[3145]:   File "/usr/lib/python3.8/site-packages/twisted/web/_newclient.py", line 1306, in _bodyDataFinished_CONNECTED
Aug 02 15:32:33 site deluged[3145]:     self._bodyProtocol.connectionLost(reason)
Aug 02 15:32:33 site deluged[3145]:   File "/usr/lib/python3.8/site-packages/twisted/web/client.py", line 2025, in connectionLost
Aug 02 15:32:33 site deluged[3145]:     self.original.connectionLost(reason)
Aug 02 15:32:33 site deluged[3145]:   File "/usr/lib/python3.8/site-packages/deluge/httpdownloader.py", line 75, in connectionLost
Aug 02 15:32:33 site deluged[3145]:     self.data = self.data.decode(self.encoding).encode('utf8')
Aug 02 15:32:33 site deluged[3145]:   File "/usr/lib/python3.8/encodings/cp1251.py", line 15, in decode
Aug 02 15:32:33 site deluged[3145]:     return codecs.charmap_decode(input,errors,decoding_table)
Aug 02 15:32:33 site deluged[3145]: builtins.UnicodeDecodeError: 'charmap' codec can't decode byte 0x98 in position 872: character maps to <undefined>
Aug 02 15:32:33 site deluged[3145]: 15:32:33.177 [CRITICAL][deluge.log                    :93  ] twisted.web._newclient.HTTPClientParser
Aug 02 15:32:33 site deluged[3145]: [Failure instance: Traceback: <class 'UnicodeDecodeError'>: 'charmap' codec can't decode byte 0x98 in position 872: character maps to <>
Aug 02 15:32:33 site deluged[3145]: /usr/lib/python3.8/site-packages/twisted/web/_newclient.py:1050:dispatcher
Aug 02 15:32:33 site deluged[3145]: /usr/lib/python3.8/site-packages/twisted/web/_newclient.py:1632:_finishResponse_WAITING
Aug 02 15:32:33 site deluged[3145]: /usr/lib/python3.8/site-packages/twisted/web/_newclient.py:1685:_giveUp
Aug 02 15:32:33 site deluged[3145]: /usr/lib/python3.8/site-packages/twisted/web/_newclient.py:1673:_disconnectParser
Aug 02 15:32:33 site deluged[3145]: --- <exception caught here> ---
Aug 02 15:32:33 site deluged[3145]: /usr/lib/python3.8/site-packages/twisted/web/_newclient.py:567:connectionLost
Aug 02 15:32:33 site deluged[3145]: /usr/lib/python3.8/site-packages/twisted/web/_newclient.py:1050:dispatcher
Aug 02 15:32:33 site deluged[3145]: /usr/lib/python3.8/site-packages/twisted/web/_newclient.py:1306:_bodyDataFinished_CONNECTED
Aug 02 15:32:33 site deluged[3145]: /usr/lib/python3.8/site-packages/twisted/web/client.py:2025:connectionLost
Aug 02 15:32:33 site deluged[3145]: /usr/lib/python3.8/site-packages/deluge/httpdownloader.py:75:connectionLost
Aug 02 15:32:33 site deluged[3145]: /usr/lib/python3.8/encodings/cp1251.py:15:decode

The issue is likely connected with incorrect treatment of the page encoding.

[Cas]

Duplicate of #3440