coeftable on optimize output (MLE and MAP) throws error

[DominiqueMakowski]

I am following the first example mentioned here https://discourse.julialang.org/t/ann-turing-0-13-0-mle-map-and-prediction/40033:

using Turing
using Optim
using StatsBase

@model function gdemo()
    s ~ InverseGamma(2,3)
    m ~ Normal(0, sqrt(s))

    1.5 ~ Normal(m, sqrt(s))
    2.0 ~ Normal(m, sqrt(s))

    return m, s
end

model = gdemo()

# Use the default optimizer, LBFGS.
mle1 = optimize(model, MLE())

coeftable(mle1)

But it throws an error. Am I doing something wrong?

ERROR: MethodError: Cannot `convert` an object of type Symbol to an object of type String

Closest candidates are:
  convert(::Type{T}, ::Union{InitialValues.SpecificInitialValue{typeof(*)}, InitialValues.SpecificInitialValue{typeof(Base.mul_prod)}}) where T<:Union{AbstractString, Number}
   @ InitialValues C:\Users\domma\.julia\packages\InitialValues\OWP8V\src\InitialValues.jl:258
  convert(::Type{T}, ::ProgressLogging.ProgressString) where T<:AbstractString
   @ ProgressLogging C:\Users\domma\.julia\packages\ProgressLogging\6KXlp\src\ProgressLogging.jl:211
  convert(::Type{String}, ::String)
   @ Base essentials.jl:298
  ...

Stacktrace:
  [1] StatsBase.NoQuote(s::Symbol)
    @ StatsBase C:\Users\domma\.julia\packages\StatsBase\XgjIN\src\statmodels.jl:111
  [2] (::StatsBase.var"#231#234"{CoefTable, Vector{AbstractVector{Float64}}})(::Tuple{Int64, Int64})
    @ StatsBase .\none:0
  [3] iterate
    @ .\generator.jl:47 [inlined]
  [4] collect(itr::Base.Generator{Base.Iterators.ProductIterator{Tuple{UnitRange{Int64}, UnitRange{Int64}}}, StatsBase.var"#231#234"{CoefTable, Vector{AbstractVector{Float64}}}})
    @ Base .\array.jl:782
  [5] show(io::IOContext{Base.TTY}, ct::CoefTable)
    @ StatsBase C:\Users\domma\.julia\packages\StatsBase\XgjIN\src\statmodels.jl:123
  [6] show(io::IOContext{Base.TTY}, #unused#::MIME{Symbol("text/plain")}, x::CoefTable)
    @ Base.Multimedia .\multimedia.jl:47
  [7] (::REPL.var"#55#56"{REPL.REPLDisplay{REPL.LineEditREPL}, MIME{Symbol("text/plain")}, Base.RefValue{Any}})(io::Any)
    @ REPL C:\Users\domma\AppData\Local\Programs\Julia-1.9.0\share\julia\stdlib\v1.9\REPL\src\REPL.jl:276
  [8] with_repl_linfo(f::Any, repl::REPL.LineEditREPL)
    @ REPL C:\Users\domma\AppData\Local\Programs\Julia-1.9.0\share\julia\stdlib\v1.9\REPL\src\REPL.jl:557
  [9] display(d::REPL.REPLDisplay, mime::MIME{Symbol("text/plain")}, x::Any)
    @ REPL C:\Users\domma\AppData\Local\Programs\Julia-1.9.0\share\julia\stdlib\v1.9\REPL\src\REPL.jl:262
 [10] display(d::REPL.REPLDisplay, x::Any)
    @ REPL C:\Users\domma\AppData\Local\Programs\Julia-1.9.0\share\julia\stdlib\v1.9\REPL\src\REPL.jl:281
 [11] display(x::Any)
    @ Base.Multimedia .\multimedia.jl:340
 [12] #invokelatest#2
    @ .\essentials.jl:816 [inlined]
 [13] invokelatest
    @ .\essentials.jl:813 [inlined]
 [14] (::VSCodeServer.var"#66#70"{Bool, Bool, Bool, Module, String, Int64, Int64, String, VSCodeServer.ReplRunCodeRequestParams})()
    @ VSCodeServer c:\Users\domma\.vscode\extensions\julialang.language-julia-1.47.2\scripts\packages\VSCodeServer\src\eval.jl:199
 [15] withpath(f::VSCodeServer.var"#66#70"{Bool, Bool, Bool, Module, String, Int64, Int64, String, VSCodeServer.ReplRunCodeRequestParams}, path::String)
    @ VSCodeServer c:\Users\domma\.vscode\extensions\julialang.language-julia-1.47.2\scripts\packages\VSCodeServer\src\repl.jl:249
 [16] (::VSCodeServer.var"#65#69"{Bool, Bool, Bool, Module, String, Int64, Int64, String, VSCodeServer.ReplRunCodeRequestParams})()
    @ VSCodeServer c:\Users\domma\.vscode\extensions\julialang.language-julia-1.47.2\scripts\packages\VSCodeServer\src\eval.jl:155
 [17] hideprompt(f::VSCodeServer.var"#65#69"{Bool, Bool, Bool, Module, String, Int64, Int64, String, VSCodeServer.ReplRunCodeRequestParams})
    @ VSCodeServer c:\Users\domma\.vscode\extensions\julialang.language-julia-1.47.2\scripts\packages\VSCodeServer\src\repl.jl:38
 [18] (::VSCodeServer.var"#64#68"{Bool, Bool, Bool, Module, String, Int64, Int64, String, VSCodeServer.ReplRunCodeRequestParams})()
    @ VSCodeServer c:\Users\domma\.vscode\extensions\julialang.language-julia-1.47.2\scripts\packages\VSCodeServer\src\eval.jl:126
 [19] with_logstate(f::Function, logstate::Any)
    @ Base.CoreLogging .\logging.jl:514
 [20] with_logger
    @ .\logging.jl:626 [inlined]
 [21] (::VSCodeServer.var"#63#67"{VSCodeServer.ReplRunCodeRequestParams})()
    @ VSCodeServer c:\Users\domma\.vscode\extensions\julialang.language-julia-1.47.2\scripts\packages\VSCodeServer\src\eval.jl:225
 [22] #invokelatest#2
    @ .\essentials.jl:816 [inlined]
 [23] invokelatest(::Any)
    @ Base .\essentials.jl:813
 [24] macro expansion
    @ c:\Users\domma\.vscode\extensions\julialang.language-julia-1.47.2\scripts\packages\VSCodeServer\src\eval.jl:34 [inlined]
 [25] (::VSCodeServer.var"#61#62")()
    @ VSCodeServer .\task.jl:514

[DominiqueMakowski]

I found the source of the error. I'll make a PR to try to fix that