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My Jupyter kernel moves between dead, starting, connected status but can’t run any cell. I am running the kernel on the cluster and everything worked fine. I can use ipython from the terminal. A similar thing happens in both Jupyter lab and notebook.

I have reinstalled ipython and tested it with iptest, reinstalled Jupyter also. 

pip uninstall ipykernel ipython jupyter_client jupyter_core traitlets ipython_genutils -y
pip install ipykernel ipython jupyter_client jupyter_core traitlets ipython_genutils

Versions:
Jupyter core : 4.5.0
Jupyter-notebook : 5.7.8
Qtconsole : 4.4.3
Ipython : 7.8.0
Ipykernel : 5.1.0
Jupyter client : 5.2.4
Jupyter lab : 1.1.4

Here is the log file when running Jupyter lab.

BND
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  • I had the same issue some weeks ago but re-installing everything helped. But I did it multiple times.. my feeling is that this is due to some environmental variables but can't help specifically, unfortunately. – Ben Oct 16 '19 at 12:39
  • I ended up creating a new conda env and reinstalling everything. – BND Oct 20 '19 at 08:56

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