# Error trying to isntall Jupyter notebook

**URL:** <https://discourse.julialang.org/t/error-trying-to-isntall-jupyter-notebook/29790>\
**Category:** General Usage\
**Tags:** question, package\
**Created:** [October 11, 2019, 6:44pm UTC](https://discourse.julialang.org/t/error-trying-to-isntall-jupyter-notebook/29790 "2019-10-11T18:44:32Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Tamas\_Papp](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/tamas_papp/32/25949_2.png) [@Tamas\_Papp](https://discourse.julialang.org/u/Tamas_Papp)\
**Post date:** [October 12, 2019, 8:14am UTC](https://discourse.julialang.org/t/error-trying-to-isntall-jupyter-notebook/29790/2 "2019-10-12T08:14:43Z")

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This may be because of a non-ASCII username, like

> [@I cant add PyPlot package](https://discourse.julialang.org/t/i-cant-add-pyplot-package/29515):
>
> julia\> using Pkg julia\> using PyPlot [Info: Precompiling PyPlot [d330b81b-6aea-500a-939a-2ce795aea3ee] ERROR: LoadError: LoadError: PyCall not properly installed. Please run Pkg.build("PyCall") Stacktrace: [1] top-level scope at C:\Users\Kovács Ádám\.julia\packages\PyCall\ttONZ\src\startup.jl:44 [2] include at .\Base.jl:31 [inlined] [3] include(::String) at C:\Users\Kovács Ádám\.julia\packages\PyCall\ttONZ\src\PyCall.jl:1 [4] top-level scope at C:\Users\Kovács Ádám\.julia\packages\PyCall\t…

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