Can't load GG.jl

I just tried to `add` JuliaVaraibles.jl and GG.jl but I'm getting this problem:
```julia
julia> using GG
[ Info: Precompiling GG [6b9d7cbe-bcb9-11e9-073f-15a7a543e2eb]
ERROR: LoadError: syntax: extra token "@" after end of expression
Stacktrace:
[1] top-level scope at /Users/mason/.julia/packages/JuliaVariables/aDBae/src/JuliaVariables.jl:72
[2] include at ./boot.jl:328 [inlined]
[3] include_relative(::Module, ::String) at ./loading.jl:1105
[4] include(::Module, ::String) at ./Base.jl:31
[5] top-level scope at none:2
[6] eval at ./boot.jl:330 [inlined]
[7] eval(::Expr) at ./client.jl:433
[8] top-level scope at ./none:3
in expression starting at /Users/mason/.julia/packages/JuliaVariables/aDBae/src/JuliaVariables.jl:72
ERROR: LoadError: Failed to precompile JuliaVariables [b14d175d-62b4-44ba-8fb7-3064adc8c3ec] to /Users/mason/.julia/compiled/v1.3/JuliaVariables/ViR92_SzssL.ji.
Stacktrace:
[1] error(::String) at ./error.jl:33
[2] compilecache(::Base.PkgId, ::String) at ./loading.jl:1274
[3] _require(::Base.PkgId) at ./loading.jl:1024
[4] require(::Base.PkgId) at ./loading.jl:922
[5] require(::Module, ::Symbol) at ./loading.jl:917
[6] include at ./boot.jl:328 [inlined]
[7] include_relative(::Module, ::String) at ./loading.jl:1105
[8] include(::Module, ::String) at ./Base.jl:31
[9] top-level scope at none:2
[10] eval at ./boot.jl:330 [inlined]
[11] eval(::Expr) at ./client.jl:433
[12] top-level scope at ./none:3
in expression starting at /Users/mason/.julia/packages/GG/Q7GYI/src/GG.jl:3
ERROR: Failed to precompile GG [6b9d7cbe-bcb9-11e9-073f-15a7a543e2eb] to /Users/mason/.julia/compiled/v1.3/GG/1AXdM_SzssL.ji.
Stacktrace:
[1] error(::String) at ./error.jl:33
[2] compilecache(::Base.PkgId, ::String) at ./loading.jl:1274
[3] _require(::Base.PkgId) at ./loading.jl:1024
[4] require(::Base.PkgId) at ./loading.jl:922
[5] require(::Module, ::Symbol) at ./loading.jl:917
```