Deluge v2.0.3-12 "Error Invalid Argument"

[Strangelovian]

Setup

Package Name: deluge
Package Version: v2.0.3-12

NAS Model: DS 1819+
NAS Architecture: x86_64
DSM version: DSM 6.2.3-25426 Update 2

Expected behavior

With version 1.3.15-9 torrent download normally.

Actual behavior

With version 2.0.3-12 torrent error: Error Invalid Argument. Even after DSM reboot error persists.
When rolling back manually to 1.3.15-9, torrent download resumes normally.

Steps to reproduce

1. Install version 2.0.3-12
2. Add torrent
3. Torrent stays in status "Error Invalid Argument"

Package log

Nothing related to this error in deluge.log.
Deluge daemon starts normally, the torrent is added, but stays with error status "Error Invalid Argument"

Other considerations

People have had this error with other OS: https://dev.deluge-torrent.org/ticket/3294
It seems related to the version of python3-libtorrent.
As the syno package embeds its own version of libtorrent, is there an issue there?

[Strangelovian]

FTR:
Within syno package, embedded libtorrent version seem to be python_libtorrent-1.1.14
But www.libtorrent.org last version is 1.2.7

[ymartin59]

Deluge package still uses Python 2.7.18, it will move to Python 3 when ready.

[Strangelovian]

Thank you.
So if I understand correctly, it's not possible to upgrade libtorrent without upgrading to python 3 first?

[ymartin59]

Deluge 2 is expected to run on Python 2 with python_libtorrent-1.1.14 as declared in requirements file.
Without a proper diagnostic why it fails on your system, this is a chance an upgrade solves nothing.

[Strangelovian]

I just know that rolling back to previous package works. So my guess it's related to protocol handling as mentioned by similar previous experiences here: https://dev.deluge-torrent.org/ticket/3294

My test torrent is a simple one: a debian torrent linux torrent file.
In the logs, nothing relevant, except that the error status reported by the lib torrent : "Error Invalid Argument".
I also enabled the debug logs by changing the start script, but without any more relevant logs for this issue.

I also tried the usual IT stuff to no avail:

• remove the package / re-install it
• reboot the DSM

[ymartin59]

Package updates have been published with fix #4192. Please confirm and close if relevant

[VincentMasselis]

I'm facing the same issue, updating the Python package and then stop and restart Deluge changed nothing :/

[BelladonnaWitch]

Hello everyone

having the same issue since python 2.7.18-24
I couldn't downgrade to python 2.7.18-23 without uninstalling Deluge so I decided no to do that

Looking forward to a new version fixing this issue, since it is really blocking the seed :(

[th0ma7]

New version of deluge is being published. Please reopen the issue if its still occurring. Thnx in advance.