I got this error when I started the plugin.
[ERROR ] 00:30:23 eventmanager:59 Event handler TorrentAddedEvent failed in <b
ound method Core.on_torrent_added of <defaulttrackers.core.Core object at 0x7fe6
b4278590>> with exception 'tuple' object has no attribute 'append'
Not sure if anyone else faces the same error. To fix this, the simple way is to change core.py Line 73:
trackers = torrent.get_status(["trackers"])["trackers"]
to
trackers = list(torrent.get_status(["trackers"])["trackers"])
Hope this helps those who having the same problem.