Traceback (most recent call last):

 "/usr/lib64/python2.7/site-packages/youtube_dl/YoutubeDL.py", line 493, in extract_info
ie_result = ie.extract(url)

 "/usr/lib64/python2.7/site-packages/youtube_dl/extractor/common.py", line 162, in extract
return self._real_extract(url)

 "/usr/lib64/python2.7/site-packages/youtube_dl/extractor/ceskatelevize.py", line 89, in _real_extract
playlistpage = self._download_json(req, video_id)

 "/usr/lib64/python2.7/site-packages/youtube_dl/extractor/common.py", line 286, in _download_json
raise ExtractorError('Failed to download JSON', cause=ve)
ExtractorError: Failed to download JSON; please report this issue on https://yt-dl.org/bug . Be sure to call youtube-dl with the --verbose flag and include its complete output. Make sure you are using the latest version; type
youtube-dl -U
to update.

Traceback (most recent call last):

 "/usr/local/lib/python2.7/dist-packages/errbot/backends/base.py", line 196, in execute_and_send
reply = self.commands[cmd](mess, args)

 "/usr/local/lib/python2.7/dist-packages/errbot/errBot.py", line 180, in status
elif get_plugin_obj_by_name(name) and get_plugin_obj_by_name(name).get_configuration_template() and not self.get_plugin_configuration(name):

 "/usr/lib/python2.7/UserDict.py", line 180, in **len**
return len(self.keys())

 "/usr/local/lib/python2.7/dist-packages/errbot/storage.py", line 35, in keys
for key in self.shelf.keys():AttributeError: 'Webserver' object has no attribute 'shelf'