[!] Traceback (most recent call last):


 "lazagne\softwares\browsers\mozilla.py", line 398, in is_master_password_correct
AttributeError: 'Sequence' object has no attribute 'asOctets'

 Traceback (most recent call last):

 "/usr/lib64/python3.4/site-packages/tornado/web.py", line 1348, in _when_complete
if result.result() is not None:

 "/usr/lib/python3.4/site-packages/jupyterhub/handlers/base.py", line 484, in get
yield self.spawn_single_user(current_user)

 "/usr/lib64/python3.4/site-packages/tornado/gen.py", line 399, in start
self.result = self.future.result()

 "/usr/lib/python3.4/site-packages/jupyterhub/handlers/base.py", line 307, in spawn_single_user
except gen.TimeoutError:
AttributeError: 'module' object has no attribute 'TimeoutError'