Problem with alpha release 3.4.0

[Fogna]

Hello everyone, I am a new member and I apologize if I use a translator for English, I switched from stable version 3.3.9 to 3.4.0 unstable and not work me the plugin Rutracker version 1.05 https://github.com / qBittorrent / qBittorrent / wiki / Unofficial-search-plugins, virtually research works but does not allow me to put a download giving me error.
Someone tell me, please, how do I fix?
Thank you

[Peter]

You can't fix this.
The plugin developer has to fix the problem.

Report the issue on Github (but please check, if it's been reported already), and hope someone will fix it.

Thank you for your understanding.

[Fogna]

Thanks for the answer but I do not think it's the fault of the plug because with the stable version 3.3.9 worked great, the problems I started having them as soon as I put the unstable 3.4.0.
My system is Ubuntu 04.16 lts, I can go back to 3.3.9 version without losing the files I have in the queue?
Thank you

[Fogna]

I put the 3.3.10 version and returned to normal operation, so do not think is a plugin problem
Thank you

[KitKat]

the unstable 3.4.0 branch is actually stale.

I believe it actually became 3.3.5 and was then dropped.