Slumspawner error when user logged in AttributeError: 'super' object has no attribute '_env_default'

[jenarabi]

Hi, Before installing SlurmSpawner my JupyterHub was running fine without any issue.

Now after installing slurmspawner the following error found when a user trying to login the Hub UI. deda1x1680:/sw-stdg/apps/Jupyterhub # /sw-stdg/apps/Jupyterhub/bin/jupyterhub -f jupyterhub_config.py [I 2018-01-22 14:17:42.384 JupyterHub app:724] Loading cookie_secret from /sw-stdg/apps/Jupyterhub/jupyterhub_cookie_secret [W 2018-01-22 14:17:42.416 JupyterHub app:365] Generating CONFIGPROXY_AUTH_TOKEN. Restarting the Hub will require restarting the proxy. Set CONFIGPROXY_AUTH_TOKEN env or JupyterHub.proxy_auth_token config to avoid this message.

[W 2018-01-22 14:17:42.419 JupyterHub app:864] No admin users, admin interface will be unavailable. [W 2018-01-22 14:17:42.419 JupyterHub app:865] Add any administrative users to c.Authenticator.admin_users in config. [I 2018-01-22 14:17:42.419 JupyterHub app:892] Not using whitelist. Any authenticated user will be allowed. [W 2018-01-22 14:17:42.431 JupyterHub app:1097] x179796 not running. [I 2018-01-22 14:17:42.496 JupyterHub app:1453] Hub API listening on http://127.0.0.1:8081/hub/ [I 2018-01-22 14:17:42.499 JupyterHub app:1176] Starting proxy @ http://:8000/ 14:17:42.606 - info: [ConfigProxy] Adding route / -> http://127.0.0.1:8081 14:17:42.617 - info: [ConfigProxy] Proxying https://:8000 to http://127.0.0.1:8081 14:17:42.617 - info: [ConfigProxy] Proxy API at http://127.0.0.1:8001/api/routes [I 2018-01-22 14:17:42.703 JupyterHub app:1485] JupyterHub is now running at http://127.0.0.1:8000/ [I 2018-01-22 14:18:15.126 JupyterHub log:100] 302 GET / (@::1) 1.72ms [I 2018-01-22 14:18:15.144 JupyterHub log:100] 302 GET /hub (@::1) 0.40ms [I 2018-01-22 14:18:15.155 JupyterHub log:100] 302 GET /hub/ (@::1) 0.80ms [I 2018-01-22 14:18:15.159 JupyterHub log:100] 302 GET /login (@::1) 0.52ms [I 2018-01-22 14:18:15.187 JupyterHub log:100] 200 GET /hub/login (@::1) 23.01ms [E 2018-01-22 14:18:25.953 JupyterHub user:251] Unhandled error starting x179796's server: 'super' object has no attribute '_env_default' [E 2018-01-22 14:18:25.999 JupyterHub web:1590] Uncaught exception POST /hub/login?next= (::1) HTTPServerRequest(protocol='https', host='localhost:8000', method='POST', uri='/hub/login?next=', version='HTTP/1.1', remote_ip='::1', headers={'X-Forwarded-Host': 'localhost:8000', 'X-Forwarded-Proto': 'https', 'X-Forwarded-Port': '8000', 'X-Forwarded-For': '::1', 'Content-Length': '46', 'Content-Type': 'application/x-www-form-urlencoded', 'Upgrade-Insecure-Requests': '1', 'Connection': 'close', 'Dnt': '1', 'Cookie': '_xsrf=2|1bb1780d|cb28b75c9d271be5e536524df0811d6a|1515597964', 'Referer': 'https://localhost:8000/hub/login', 'Accept-Encoding': 'gzip, deflate, br', 'Accept-Language': 'en-US,en;q=0.5', 'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,/;q=0.8', 'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Firefox/52.0', 'Host': 'localhost:8000'}) Traceback (most recent call last): File "/sw-stdg/apps/Jupyterhub/lib/python3.6/site-packages/tornado/web.py", line 1511, in _execute result = yield result File "/sw-stdg/apps/Jupyterhub/lib/python3.6/site-packages/jupyterhub/handlers/login.py", line 84, in post yield self.spawn_single_user(user) File "/sw-stdg/apps/Jupyterhub/lib/python3.6/site-packages/jupyterhub/handlers/base.py", line 328, in spawn_single_user yield gen.with_timeout(timedelta(seconds=self.slow_spawn_timeout), f) File "/sw-stdg/apps/Jupyterhub/lib/python3.6/site-packages/jupyterhub/user.py", line 261, in spawn raise e File "/sw-stdg/apps/Jupyterhub/lib/python3.6/site-packages/jupyterhub/user.py", line 229, in spawn ip_port = yield gen.with_timeout(timedelta(seconds=spawner.start_timeout), f) File "/sw-stdg/apps/Jupyterhub/slurmspawner-master/slurmspawner/slurmspawner.py", line 380, in start env = self.env.copy() File "/sw-stdg/apps/Jupyterhub/lib/python3.6/site-packages/traitlets/traitlets.py", line 556, in get return self.get(obj, cls) File "/sw-stdg/apps/Jupyterhub/lib/python3.6/site-packages/traitlets/traitlets.py", line 535, in get value = self._validate(obj, dynamic_default()) File "/sw-stdg/apps/Jupyterhub/slurmspawner-master/slurmspawner/slurmspawner.py", line 116, in _env_default env = super()._env_default() AttributeError: 'super' object has no attribute '_env_default'

[E 2018-01-22 14:18:26.012 JupyterHub log:99] { "X-Forwarded-Host": "localhost:8000", "X-Forwarded-Proto": "https", "X-Forwarded-Port": "8000", "X-Forwarded-For": "::1", "Content-Length": "46", "Content-Type": "application/x-www-form-urlencoded", "Upgrade-Insecure-Requests": "1", "Connection": "close", "Dnt": "1", "Cookie": "_xsrf=2|1bb1780d|cb28b75c9d271be5e536524df0811d6a|1515597964", "Referer": "https://localhost:8000/hub/login", "Accept-Encoding": "gzip, deflate, br", "Accept-Language": "en-US,en;q=0.5", "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,/;q=0.8", "User-Agent": "Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Firefox/52.0", "Host": "localhost:8000" } [E 2018-01-22 14:18:26.012 JupyterHub log:100] 500 POST /hub/login?next= (@::1) 730.53ms 14:22:42.741 - info: [ConfigProxy] 200 GET /api/routes ^C Interrupted [I 2018-01-22 14:25:14.920 JupyterHub app:1332] Cleaning up single-user servers... [I 2018-01-22 14:25:15.128 JupyterHub app:1343] Cleaning up proxy[5040]... [I 2018-01-22 14:25:15.129 JupyterHub app:1369] ...done

Need your help. Thanks, Rabindra

[mkgilbert]

Rabindra, could you post the output of pip freeze in the environment you're running in? It might help to see what versions of the various packages you're using. This repo hasn't been updated in a while, so the problem you're seeing could very well be due to something changing in one of the dependencies.

[rsearles35]

I'm actually having the same issue as @jenarabi. Has this been resolved?