I am trying to reproduce an example from the documentation.

However, I get this error:

ArgumentError: Invalid shortcut string
tokenize_shorthand(s::String) at shorthandparser.jl:13
parse_shortcut(s::String) at shorthandparser.jl:66
fix_shortcut_level_encoding at dsl_vlplot_function.jl:26 [inlined]
(::VegaLite.var"#17#23"{Vector{Pair{Symbol, AbstractVector{T} where T}}})(::Pair{String, String}) at none:0
iterate at generator.jl:47 [inlined]
OrderedCollections.OrderedDict{String, Any}(kv::Base.Generator{OrderedCollections.OrderedDict{String, Any}, VegaLite.var"#17#23"{Vector{Pair{Symbol, AbstractVector{T} where T}}}}) at ordered_dict.jl:26
fix_shortcut_level_spec(spec_frag::VegaLite.VLFrag) at dsl_vlplot_function.jl:170
top-level scope at plot_test_del.jl:8
eval at boot.jl:360 [inlined]

My specs:

• VegaDatasets v2.1.1
• VegaLite v2.6.0
• versioninfo()
  Julia Version 1.6.0
  Commit f9720dc2eb (2021-03-24 12:55 UTC)
  Platform Info:
  OS: macOS (x86_64-apple-darwin19.6.0)
  CPU: Intel(R) Core(TM) i5-5287U CPU @ 2.90GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-11.0.1 (ORCJIT, broadwell)
  Environment:
  JULIA_EDITOR = atom -a
  JULIA_NUM_THREADS = 4