
Traceback (most recent call last):

 "/usr/local/lib/python3.5/dist-packages/jupyterhub/app.py", line 1442, in start
yield service.start()

 "/usr/local/lib/python3.5/dist-packages/jupyterhub/services/service.py", line 228, in start
env['JUPYTERHUB_SERVICE_PREFIX'] = self.server.base_url
AttributeError: 'NoneType' object has no attribute 'base_url'
Traceback (most recent call last):


 "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpksi3o1r1\build\youtube_dl\YoutubeDL.py", line 808, in extract_info


 "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpksi3o1r1\build\youtube_dl\YoutubeDL.py", line 863, in process_ie_result


 "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpksi3o1r1\build\youtube_dl\YoutubeDL.py", line 1644, in process_video_result


 "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpksi3o1r1\build\youtube_dl\YoutubeDL.py", line 1920, in process_info


 "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpksi3o1r1\build\youtube_dl\YoutubeDL.py", line 1865, in dl


 "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpksi3o1r1\build\youtube_dl\downloader\common.py", line 366, in download


 "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpksi3o1r1\build\youtube_dl\downloader\http.py", line 349, in real_download


 "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpksi3o1r1\build\youtube_dl\downloader\http.py", line 243, in download
AttributeError: 'ssl.SSLError' object has no attribute 'message'
