Can't launch jupyter notebook with lsst_dev stack_20181012 shared stack

source /software/lsstsw/stack/loadLSST.bash 

setup lsst_distrib 

[yusra@lsst-dev01 notebooks]$ jupyter notebook --no-browser --port=8701

Traceback (most recent call last):

  File "/software/lsstsw/stack_20181012/python/miniconda3-4.5.4/envs/lsst-scipipe/bin/jupyter-notebook", line 4, in <module>

    import notebook.notebookapp

  File "/software/lsstsw/stack_20181012/python/miniconda3-4.5.4/envs/lsst-scipipe/lib/python3.6/site-packages/notebook/notebookapp.py", line 40, in <module>

    ioloop.install()

  File "/software/lsstsw/stack_20181012/python/miniconda3-4.5.4/envs/lsst-scipipe/lib/python3.6/site-packages/zmq/eventloop/ioloop.py", line 210, in install

    assert (not ioloop.IOLoop.initialized()) or \

AttributeError: type object 'IOLoop' has no attribute 'initialized'