jupyter-client has to be installed but “jupyter kernelspec --version” exited with code 127
I have already installed Jupyter notebook in my ubuntu 16.04 machine. In jupyter notebook there is by default python installed. Now I want to use R from jupyter notebook.
To do so I followed IRkernel installation link and run below commands:
install.packages('devtools')
devtools::install_github('IRkernel/IRkernel')
But when I run
IRkernel::installspec() command it shows below error:
jupyter-client has to be installed but “jupyter kernelspec --version” exited with code 127
I am now confused why this error occurs.
Solution
Running this command from RStudio will show this error. When you run this command from command line/ terminal then everything will be fine.
So just type R from your command line.
Then Run below commands:
install.packages('devtools')
devtools::install_github('IRkernel/IRkernel')
IRkernel::installspec()
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