julia> sortperm([1,1,1,1], dims=1)
4-element Vector{Int64}:
 1
 2
 3
 4

julia> sortperm([1,1,1], dims=1)
ERROR: MethodError: no method matching sort!(::Vector{…}; alg::Base.Sort.SubArrayOptimization{…}, order::Base.Order.Perm{…}, scratch::Nothing, dims::Int64)
This method does not support all of the given keyword arguments (and may not support any).

Closest candidates are:
  sort!(::AbstractVector{T}, ::Integer, ::Integer, ::Base.Sort.MergeSortAlg, ::Base.Order.Ordering, ::Vector{T}) where T got unsupported keyword arguments "alg", "order", "scratch", "dims"
   @ Base sort.jl:2391
  sort!(::AbstractVector{T}, ::Integer, ::Integer, ::Base.Sort.MergeSortAlg, ::Base.Order.Ordering, ::Union{Nothing, AbstractVector{T}}) where T got unsupported keyword arguments "alg", "order", "scratch", "dims"
   @ Base sort.jl:2393
  sort!(::AbstractVector, ::Integer, ::Integer, ::Base.Sort.Algorithm, ::Base.Order.Ordering, ::Vector) got unsupported keyword arguments "alg", "order", "scratch", "dims"
   @ Base sort.jl:2470
  ...

Stacktrace:
 [1] kwerr(::@NamedTuple{…}, ::Function, ::Vector{…})
   @ Base ./error.jl:174
 [2] _sortperm(A::Vector{…}; alg::Base.Sort.SubArrayOptimization{…}, order::Base.Order.ForwardOrdering, scratch::Nothing, dims::@Kwargs{…})
   @ Base.Sort ./sort.jl:1912
 [3] _sortperm
   @ ./sort.jl:1899 [inlined]
 [4] #sortperm#36
   @ ./sort.jl:1896 [inlined]
 [5] top-level scope
   @ REPL[2]:1
Some type information was truncated. Use `show(err)` to see complete types.