Can't evaluate diff(diff(Fourier()))[0.0, [1]]

[DanielVandH]

The following works:

julia> using ClassicalOrthogonalPolynomials

julia> diff(diff(Legendre()))[0.0, 1]
0.0

julia> diff(diff(Legendre()))[0.0, [1]]
1-element Vector{Float64}:
 0.0

julia> diff(diff(Fourier()))[0.0, 1]
0.0

but

julia> diff(diff(Fourier()))[0.0, [1]]
ERROR: MethodError: no method matching Int64(::Infinities.InfiniteCardinal{0})
The type `Int64` exists, but no method is defined for this combination of argument types when trying to construct it.

Closest candidates are:
  (::Type{T})(::T) where T<:Number
   @ Core boot.jl:900
  Int64(::Float64)
   @ Base float.jl:990
  Int64(::Float32)
   @ Base float.jl:990
  ...

Stacktrace:
  [1] convert(::Type{Int64}, x::Infinities.InfiniteCardinal{0})
    @ Base .\number.jl:7
  [2] searchsortedfirst(a::InfiniteArrays.InfStepRange{…}, x::Infinities.InfiniteCardinal{…}, o::Base.Order.ForwardOrdering)
    @ Base.Sort .\sort.jl:0
  [3] searchsortedfirst(v::InfiniteArrays.InfStepRange{…}, x::Infinities.InfiniteCardinal{…}; lt::Function, by::Function, rev::Nothing, order::Base.Order.ForwardOrdering)
    @ Base.Sort .\sort.jl:303
  [4] _searchsortedfirst(a::InfiniteArrays.InfStepRange{Int64, Int64}, k::Infinities.InfiniteCardinal{0})
    @ BlockArrays C:\Users\djv23\.julia\packages\BlockArrays\VccC2\src\blockaxis.jl:400
  [5] findblock(b::BlockArrays.BlockedOneTo{Int64, InfiniteArrays.InfStepRange{…}}, k::Infinities.InfiniteCardinal{0})
    @ BlockArrays C:\Users\djv23\.julia\packages\BlockArrays\VccC2\src\blockaxis.jl:409
  [6] colsupport(::BlockArrays.BlockLayout{…}, A::LinearAlgebra.Transpose{…}, j::BlockArrays.BlockedOneTo{…})
    @ BlockArrays C:\Users\djv23\.julia\packages\BlockArrays\VccC2\src\blocklinalg.jl:65
  [7] colsupport(A::LinearAlgebra.Transpose{…}, j::BlockArrays.BlockedOneTo{…})
    @ ArrayLayouts C:\Users\djv23\.julia\packages\ArrayLayouts\48qDX\src\memorylayout.jl:662
  [8] _mul_args_colsupport(a::LinearAlgebra.Transpose{…}, kr::BlockArrays.BlockedOneTo{…})
    @ LazyArrays C:\Users\djv23\.julia\packages\LazyArrays\Qs2fz\src\linalg\mul.jl:198
  [9] __mul_args_cols(jr::BlockArrays.BlockedOneTo{…}, z::LinearAlgebra.Transpose{…}, y::LinearAlgebra.Transpose{…})
    @ LazyArrays C:\Users\djv23\.julia\packages\LazyArrays\Qs2fz\src\linalg\mul.jl:204
 [10] _mul_args_cols(::Float64, ::QuasiArrays.PermutedDimsQuasiArray{…}, ::LinearAlgebra.Transpose{…}, ::Vararg{…})
    @ LazyArrays C:\Users\djv23\.julia\packages\LazyArrays\Qs2fz\src\linalg\mul.jl:206
 [11] _mat_mul_arguments(args::Tuple{…}, ::Tuple{…})
    @ LazyArrays C:\Users\djv23\.julia\packages\LazyArrays\Qs2fz\src\linalg\mul.jl:231
 [12] _vec_mul_arguments(args::Tuple{…}, ::Tuple{…})
    @ LazyArrays C:\Users\djv23\.julia\packages\LazyArrays\Qs2fz\src\linalg\mul.jl:245
 [13] _vec_mul_arguments(args::Tuple{…}, ::Tuple{…})
    @ LazyArrays C:\Users\djv23\.julia\packages\LazyArrays\Qs2fz\src\linalg\mul.jl:252
 [14] _vec_mul_arguments(V::SubArray{Float64, 1, QuasiArrays.ApplyQuasiMatrix{…}, Tuple{…}, false})
    @ LazyArrays C:\Users\djv23\.julia\packages\LazyArrays\Qs2fz\src\linalg\mul.jl:256
 [15] arguments(::LazyArrays.ApplyLayout{…}, V::SubArray{…})
    @ LazyArrays C:\Users\djv23\.julia\packages\LazyArrays\Qs2fz\src\linalg\mul.jl:259
 [16] sub_materialize
    @ C:\Users\djv23\.julia\packages\LazyArrays\Qs2fz\src\linalg\mul.jl:261 [inlined]
 [17] sub_materialize
    @ C:\Users\djv23\.julia\packages\ArrayLayouts\48qDX\src\ArrayLayouts.jl:132 [inlined]
 [18] layout_getindex
    @ C:\Users\djv23\.julia\packages\ArrayLayouts\48qDX\src\ArrayLayouts.jl:138 [inlined]
 [19] _getindex(::Type, ::IndexCartesian, A::QuasiArrays.ApplyQuasiMatrix{…}, I::Tuple{…})
    @ QuasiArrays C:\Users\djv23\.julia\packages\QuasiArrays\31vF4\src\abstractquasiarray.jl:381
 [20] _getindex
    @ C:\Users\djv23\.julia\packages\QuasiArrays\31vF4\src\abstractquasiarray.jl:372 [inlined]
 [21] getindex(::QuasiArrays.ApplyQuasiMatrix{Float64, typeof(*), Tuple{…}}, ::Float64, ::Vector{Int64})
    @ QuasiArrays C:\Users\djv23\.julia\packages\QuasiArrays\31vF4\src\abstractquasiarray.jl:367
 [22] top-level scope
    @ REPL[21]:1
Some type information was truncated. Use `show(err)` to see complete types.