いままで、Juliaでusing Ijuliaとしていたら、使えるようになっていたのに急に使えなくなってしまいました。原因が全くわかない状況です。  
丸投げな質問ですいません。。  
自分のノートパソコンはwindows10なのですが、Jupyterを一度終了させ、もう一度ターミナルから起動させようとしたら、このような状況に陥ってしまいました。環境変数も何も変えていません。さらに以前は何回もjupyterを起動できたのですが、、、。  
パソコンに詳しい方、ご指導のほどお願いいたします。。

```

       _       _ _(_)_     |  Documentation: https://docs.julialang.org
      (_)     | (_) (_)    |
       _ _   _| |_  __ _   |  Type "?" for help, "]?" for Pkg help.
      | | | | | | |/ _` |  |
      | | |_| | | | (_| |  |  Version 1.0.2 (2018-11-08)
     _/ |\__'_|_|_|\__'_|  |  Official https://julialang.org/ release
    |__/                   |
    
    julia> import Pkg
    
    julia> Pkg.build("Ijulia")
    ERROR: The following package names could not be resolved:
     * Ijulia (not found in project or manifest)
    Please specify by known `name=uuid`.
    Stacktrace:
     [1] pkgerror(::String) at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.0\Pkg\src\Types.jl:120
     [2] #ensure_resolved#43(::Bool, ::Function, ::Pkg.Types.EnvCache, ::Array{Pkg.Types.PackageSpec,1}) at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.0\Pkg\src\Types.jl:898
     [3] ensure_resolved at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.0\Pkg\src\Types.jl:868 [inlined]
     [4] #build#53(::Base.Iterators.Pairs{Union{},Union{},Tuple{},NamedTuple{(),Tuple{}}}, ::Function, ::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1}) at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.0\Pkg\src\API.jl:452
     [5] build at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.0\Pkg\src\API.jl:433 [inlined]
     [6] build(::String) at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.0\Pkg\src\API.jl:428
     [7] top-level scope at none:0
    
    julia> Pkg.add("Ijulia")
      Updating registry at `C:\Users\reisa\.julia\registries\General`
      Updating git-repo `https://github.com/JuliaRegistries/General.git`
    ERROR: The following package names could not be resolved:
     * Ijulia (not found in project, manifest or registry)
    Please specify by known `name=uuid`.
    Stacktrace:
     [1] pkgerror(::String) at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.0\Pkg\src\Types.jl:120
     [2] #ensure_resolved#43(::Bool, ::Function, ::Pkg.Types.EnvCache, ::Array{Pkg.Types.PackageSpec,1}) at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.0\Pkg\src\Types.jl:898
     [3] #ensure_resolved at .\none:0 [inlined]
     [4] #add_or_develop#13(::Symbol, ::Bool, ::Base.Iterators.Pairs{Union{},Union{},Tuple{},NamedTuple{(),Tuple{}}}, ::Function, ::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1}) at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.0\Pkg\src\API.jl:59
     [5] #add_or_develop at .\none:0 [inlined]
     [6] #add_or_develop#12 at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.0\Pkg\src\API.jl:29 [inlined]
     [7] #add_or_develop at .\none:0 [inlined]
     [8] #add_or_develop#11 at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.0\Pkg\src\API.jl:28 [inlined]
     [9] #add_or_develop at .\none:0 [inlined]
     [10] #add_or_develop#10 at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.0\Pkg\src\API.jl:27 [inlined]
     [11] #add_or_develop at .\none:0 [inlined]
     [12] #add#18 at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.0\Pkg\src\API.jl:69 [inlined]
     [13] add(::String) at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.0\Pkg\src\API.jl:69
     [14] top-level scope at none:0
    
    julia> using Ijulia
    ERROR: ArgumentError: Package Ijulia not found in current path:
    - Run `import Pkg; Pkg.add("Ijulia")` to install the Ijulia package.
    
    Stacktrace:
     [1] require(::Module, ::Symbol) at .\loading.jl:823
    
```
CC BY-SA 4.0
2018-12-01T17:11:30.837
50817
2018-12-09T06:06:37.923
2018-12-02T00:39:32.887
14745
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question
jupyter-notebook julia
JuliaでIjuliaが使えなくなってしまった原因がわからない
Ijulia ではなくIJuliaでした。。。
CC BY-SA 4.0
2018-12-09T06:06:37.923
51057
2018-12-09T06:06:37.923
29111
50817
answer