key Mable is not found

[was-d]

Using Julia from: "C:\Users\Walter A. Smith\AppData\Local\Programs\Julia\Julia-1.4.1\bin"
Installing Ahorn, this might take a while.
Please make sure not to put the command line into select mode, that means do not click inside the window.

Hey, thanks for giving Ahorn a try! Ahorn is currently still in a very early state. If you find bugs, please report them!

This installer is going to install or update Maple and Ahorn via the package manager as well as create a file in the same directory as this installer file, are you okay with that? [y/N]
y

======================
The installer will now download and install required dependencies as well as the program itself. This will likely take a few minutes, so grab yourself a glass of juice while you wait.
We will tell you when the installation process is done, any warnings (not errors) in the console are fine and can be ignored.

Environment path: C:\Users\Walter A. Smith\AppData\Local\Ahorn\env
Activating new environment at C:\Users\Walter A. Smith\AppData\Local\Ahorn\env\Project.toml
┌ Warning: Pkg.installed() is deprecated
└ @ Pkg D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.4\Pkg\src\Pkg.jl:531
Installing Maple...
Updating git-repo https://github.com/CelestialCartographers/Maple.git
Resolving package versions...
Cloning default registries into C:\Users\Walter A. Smith\.julia
Cloning registry from "https://github.com/JuliaRegistries/General.git"
ERROR: LoadError: SystemError: opening file "C:\Users\Walter A. Smith\.julia\registries\General\Registry.toml": No such file or directory
Stacktrace:
[1] systemerror(::String, ::Int32; extrainfo::Nothing) at .\error.jl:168
[2] #systemerror#50 at .\error.jl:167 [inlined]
[3] systemerror at .\error.jl:167 [inlined]
[4] open(::String; read::Bool, write::Nothing, create::Nothing, truncate::Nothing, append::Nothing) at .\iostream.jl:254
[5] open(::String, ::String) at .\iostream.jl:310
[6] open(::typeof(Pkg.TOML.parse), ::String, ::Vararg{String,N} where N; kwargs::Base.Iterators.Pairs{Union{},Union{},Tuple{},NamedTuple{(),Tuple{}}}) at .\io.jl:296
[7] open at .\io.jl:296 [inlined]
[8] parsefile at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.4\Pkg\ext\TOML\src\TOML.jl:50 [inlined]
[9] read_registry(::String; cache::Bool) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.4\Pkg\src\Types.jl:974
[10] read_registry at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.4\Pkg\src\Types.jl:969 [inlined]
[11] (::Pkg.Types.var"#92#95"{Pkg.Types.Context,String,Pkg.Types.RegistrySpec})(::String) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.4\Pkg\src\Types.jl:946
[12] mktempdir(::Pkg.Types.var"#92#95"{Pkg.Types.Context,String,Pkg.Types.RegistrySpec}, ::String; prefix::String) at .\file.jl:682
[13] mktempdir at .\file.jl:680 [inlined] (repeats 2 times)
[14] clone_or_cp_registries(::Pkg.Types.Context, ::Array{Pkg.Types.RegistrySpec,1}, ::String) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.4\Pkg\src\Types.jl:911
[15] clone_or_cp_registries at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.4\Pkg\src\Types.jl:902 [inlined] (repeats 2 times)
[16] clone_default_registries(::Pkg.Types.Context) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.4\Pkg\src\Types.jl:821
[17] find_registered!(::Pkg.Types.Context, ::Array{String,1}, ::Array{Base.UUID,1}) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.4\Pkg\src\Types.jl:1167
[18] registered_paths(::Pkg.Types.Context, ::Base.UUID) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.4\Pkg\src\Types.jl:1194
[19] deps_graph(::Pkg.Types.Context, ::Dict{Base.UUID,String}, ::Dict{Base.UUID,Pkg.Types.VersionSpec}, ::Dict{Base.UUID,Pkg.Resolve.Fixed}) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.4\Pkg\src\Operations.jl:409
[20] resolve_versions!(::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1}) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.4\Pkg\src\Operations.jl:340
[21] targeted_resolve(::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1}, ::Pkg.Types.PreserveLevel) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.4\Pkg\src\Operations.jl:1057
[22] tiered_resolve(::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1}) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.4\Pkg\src\Operations.jl:1029
[23] _resolve at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.4\Pkg\src\Operations.jl:1063 [inlined]
[24] add(::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1}, ::Array{Base.UUID,1}; preserve::Pkg.Types.PreserveLevel, platform::Pkg.BinaryPlatforms.Windows) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.4\Pkg\src\Operations.jl:1078
[25] add(::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1}; preserve::Pkg.Types.PreserveLevel, platform::Pkg.BinaryPlatforms.Windows, kwargs::Base.Iterators.Pairs{Union{},Union{},Tuple{},NamedTuple{(),Tuple{}}}) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.4\Pkg\src\API.jl:159
[26] add(::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1}) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.4\Pkg\src\API.jl:112
[27] #add#27 at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.4\Pkg\src\API.jl:109 [inlined]
[28] add at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.4\Pkg\src\API.jl:109 [inlined]
[29] #add#23 at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.4\Pkg\src\API.jl:106 [inlined]
[30] add at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.4\Pkg\src\API.jl:106 [inlined]
[31] install_or_update(::String, ::String) at C:\Users\Walter A. Smith\Documents\Ahorn\install_ahorn.jl:20
[32] top-level scope at C:\Users\Walter A. Smith\Documents\Ahorn\install_ahorn.jl:56
[33] include(::Module, ::String) at .\Base.jl:377
[34] exec_options(::Base.JLOptions) at .\client.jl:288
[35] _start() at .\client.jl:484
in expression starting at C:\Users\Walter A. Smith\Documents\Ahorn\install_ahorn.jl:56
caused by [exception 1]
KeyError: key "Maple" not found
Stacktrace:
[1] getindex at .\dict.jl:477 [inlined]
[2] install_or_update(::String, ::String) at C:\Users\Walter A. Smith\Documents\Ahorn\install_ahorn.jl:14
[3] top-level scope at C:\Users\Walter A. Smith\Documents\Ahorn\install_ahorn.jl:56
[4] include(::Module, ::String) at .\Base.jl:377
[5] exec_options(::Base.JLOptions) at .\client.jl:288
[6] _start() at .\client.jl:484
Press any key to continue . . .

[Cruor]

Solved on Discord, closing issue.