no method matching fe(::CategoricalValue

[jariji]

I'm trying to figure out how to use fe but it doesn't work how I expected.

using RDatasets, FixedEffectModels
diamonds = dataset("ggplot2", "diamonds")
reg(diamonds, @formula(Price ~ Carat + fe(Clarity)), Vcov.cluster(:Color))
ERROR: MethodError: no method matching fe(::CategoricalValue{String, UInt8})
Closest candidates are:
  fe(::GLFixedEffectModel) at ~/.julia/packages/GLFixedEffectModels/Va8dj/src/GLFixedEffectModel.jl:113
  fe(::Term) at ~/.julia/packages/GLFixedEffectModels/Va8dj/src/utils/formula.jl:49
  fe(::Symbol) at ~/.julia/packages/GLFixedEffectModels/Va8dj/src/utils/formula.jl:50
Stacktrace:
  [1] (::var"#648#649")(Clarity::CategoricalValue{String, UInt8})
    @ Main ./none:0
  [2] _broadcast_getindex_evalf
    @ ./broadcast.jl:670 [inlined]
  [3] _broadcast_getindex
    @ ./broadcast.jl:643 [inlined]
  [4] getindex
    @ ./broadcast.jl:597 [inlined]
  [5] copy
    @ ./broadcast.jl:899 [inlined]
  [6] materialize
    @ ./broadcast.jl:860 [inlined]
  [7] modelcols
    @ ~/.julia/packages/StatsModels/qY2YS/src/terms.jl:491 [inlined]
  [8] #38
    @ ./none:0 [inlined]
  [9] iterate
    @ ./generator.jl:47 [inlined]
 [10] collect_to!