Fail connecting octave kernel with JupyterHub

[maucejo]

I have tried to use the octave kernel within a Jupyterhub instance. I have followed the instructions given in the ReadMe.rst. Unfortunately, when opening a new notebook, the kernel does not start. When opening a terminal, octave runs, but returns two warnings: octave: X11 DISPLAY environment variable not set octave: disabling GUI features

Do you have any idea to solve this problem ?

$ python -m octave_kernel.check Octave kernel v0.32.0 Metakernel v0.27.5 Python v3.7.8 | packaged by conda-forge | (default, Nov 27 2020, 19:24:58) [GCC 9.3.0] Python path: /srv/conda/envs/notebook/bin/python

Connecting to Octave... Octave connection established Octave Kernel v0.32.0 running GNU Octave v6.1.0 Graphics toolkit: gnuplot Available toolkits: [1,1] = gnuplot }

Thanks