# WebIO error and confusion about Jupyter installation

**URL:** <https://discourse.julialang.org/t/webio-error-and-confusion-about-jupyter-installation/48672>\
**Category:** New to Julia\
**Tags:** jupyter\
**Created:** [October 20, 2020, 5:28am UTC](https://discourse.julialang.org/t/webio-error-and-confusion-about-jupyter-installation/48672 "2020-10-20T05:28:45Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![akahs](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/akahs/32/15377_2.png) [@akahs](https://discourse.julialang.org/u/akahs)\
**Post date:** [October 20, 2020, 5:28am UTC](https://discourse.julialang.org/t/webio-error-and-confusion-about-jupyter-installation/48672/1 "2020-10-20T05:28:45Z")

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I am a new user of Julia (v1.5.0) on JupyterLab (v2.2.8). I installed Jupyter via pip (but somehow there also seems to be an installation from conda). Recently I encountered this “WebIO not detected” error when using PlotlyJS, so I followed [here](https://juliagizmos.github.io/WebIO.jl/latest/troubleshooting/not-detected/#WebIO-Not-Detected) and ran

```julia
WebIO.install_jupyter_labextension()

```

It produced this error:

> [ Info: Using default Jupyter executable at `'C:\Users\akahs\AppData\Local\Programs\Python\Python38\Scripts\jupyter.exe'`; to use a different executable, see the documentation by running `?WebIO.install_jupyter_labextension`.  
> An error occured.  
> ValueError: No linked package for @webio/webio  
> See the log file for details: C:\Users\akahs\AppData\Local\Temp\jupyterlab-debug-pyfv8iws.log  
> An error occured.  
> ValueError: Please install Node.js and npm before continuing installation. You may be able to install Node.js from your package manager, from conda, or directly from the Node.js website ([https://nodejs.org](https://nodejs.org)).  
> See the log file for details: C:\Users\akahs\AppData\Local\Temp\jupyterlab-debug-\_7i69vvl.log  
> An error occured.  
> ValueError: Please install Node.js and npm before continuing installation. You may be able to install Node.js from your package manager, from conda, or directly from the Node.js website ([https://nodejs.org](https://nodejs.org)).  
> See the log file for details: C:\Users\akahs\AppData\Local\Temp\jupyterlab-debug-2bwpqw3f.log  
> ERROR: failed process: Process(`'C:\Users\akahs\AppData\Local\Programs\Python\Python38\Scripts\jupyter.exe' labextension install --no-build @webio/jupyter-lab-provider@0.8.15`, ProcessExited(1)) [1]

Then I tried

```julia
WebIO.install_jupyter_labextension(condajl=true)

```

And it produced another error:

> An error occured.  
> ValueError: No linked package for @webio/webio  
> See the log file for details: C:\Users\akahs\AppData\Local\Temp\jupyterlab-debug-rm3270jk.log  
> An error occured.  
> ValueError: Please install Node.js and npm before continuing installation. You may be able to install Node.js from your package manager, from conda, or directly from the Node.js website ([https://nodejs.org](https://nodejs.org)).  
> See the log file for details: C:\Users\akahs\AppData\Local\Temp\jupyterlab-debug-gwaskt1f.log  
> An error occured.  
> ValueError: Please install Node.js and npm before continuing installation. You may be able to install Node.js from your package manager, from conda, or directly from the Node.js website ([https://nodejs.org](https://nodejs.org)).  
> See the log file for details: C:\Users\akahs\AppData\Local\Temp\jupyterlab-debug-j9k9vh1b.log  
> ERROR: failed process: Process(setenv(`'C:\Users\akahs\.julia\conda\3\Scripts\jupyter.exe' labextension install --no-build @webio/jupyter-lab-provider@0.8.15`,[“PLATFORMCODE=1M”,…  
> …  
> Stacktrace:  
> [1] pipeline\_error at .\process.jl:525 [inlined]  
> [2] run(::Cmd; wait::Bool) at .\process.jl:440  
> [3] run at .\process.jl:438 [inlined]  
> [4] install\_jupyter\_labextension(::Nothing; force\_conda\_jupyter::Nothing, condajl::Bool, dev::Bool) at C:\Users\akahs.julia\packages\WebIO\Fy9h1\deps\jupyter.jl:216  
> [5] top-level scope at REPL[5]:1

I’m wondering if this has something to do with my pip installation of Jupyter. But a more basic issue is, I’m very confused about pip installation vs. conda installation, which one Julia is using, and even why conda is involved here at all. I wonder if there’s a tutorial/introduction about the relationship between pip/conda.jl/Jupyter/IJulia/etc.?

---

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**Author:** ![Elliott\_Collins](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/elliott_collins/32/22876_2.png) [@Elliott\_Collins](https://discourse.julialang.org/u/Elliott_Collins)\
**Post date:** [March 13, 2021, 7:08am UTC](https://discourse.julialang.org/t/webio-error-and-confusion-about-jupyter-installation/48672/2 "2021-03-13T07:08:42Z")

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Facing the exact same issue on Ubuntu using the Conda install of Jupyter lab.