Flexget: Unexpected crash in plugin discover: NoneType object has no attribute 'text'

Expected behaviour:

List of new episodes are sent to remote deluge daemon

Actual behaviour:

Unexpected crash has occurred. BUG: Unhandled error in plugin discover: ‘NoneType’ object has no attribute ‘text’

Steps to reproduce:

I can reproduce it using my config, but I’m unable to figure out how to gather more detailed information (aside from setting flexget’s log to debug).

This issue didn’t start occurring until I updated flexget to the latest version. Since then, I’ve tried the latest version as well as the development version. I’ve even tried different versions of Python. At the time of this writing, I’m using:

flexget 2.9.7.dev python 2.7.9

I’m pretty new at flexget, but I think the issue with related with this search string: https://iptorrents.com/t?4=&5=&22=&q=Teen+Wolf+S06E08&qf=

Config:

http://pastebin.com/6sLVmUSe

Log:

http://pastebin.com/AY1pqZuP

Additional information:

• Flexget Version: 2.9.7.dev
• Python Version: 2.7.9
• Installation method: https://flexget.com/GitHubInstall
• OS and version: running docker container phusion/baseimage
• Link to crash log: http://pastebin.com/cweVDm9S