ERROR: MethodError: no method matching iterate(::Nothing)

[jishnub]

julia> using BlockBandedMatrices, LinearAlgebra

julia> @enter BlockSkylineMatrix{Bool}(I, 1:1, 1:4, ([0,0,0,0],[0,1,1,1]));
In BlockSkylineMatrix(A, rdims, cdims, lu) at /home/jishnu/.julia/packages/BlockBandedMatrices/8oK1s/src/BlockSkylineMatrix.jl:264
>264  BlockSkylineMatrix{T}(A::Union{AbstractMatrix,UniformScaling},
 265                             rdims::AbstractVector{Int}, cdims::AbstractVector{Int}, lu::NTuple{2,AbstractVector{Int}}) where T =
 266                                 BlockSkylineMatrix{T}(A, BlockSkylineSizes(rdims, cdims, lu...))

About to run: (Core.apply_type)(BlockSkylineMatrix, Bool)
1|debug> sl
ERROR: MethodError: no method matching iterate(::Nothing)

Closest candidates are:
  iterate(::Base.AsyncGenerator, ::Base.AsyncGeneratorState)
   @ Base asyncmap.jl:362
  iterate(::Base.AsyncGenerator)
   @ Base asyncmap.jl:362
  iterate(::Pkg.Registry.RegistryInstance)
   @ Pkg ~/.julia/juliaup/julia-1.10.2+0.x64.linux.gnu/share/julia/stdlib/v1.10/Pkg/src/Registry/registry_instance.jl:455
  ...

Stacktrace:
 [1] (BlockSkylineMatrix{Bool, DATA} where DATA<:AbstractVector{Bool})(A::UniformScaling{Bool}, rdims::UnitRange{Int64}, cdims::UnitRange{Int64}, lu::Tuple{Vector{Int64}, Vector{Int64}})
   @ BlockBandedMatrices ~/.julia/packages/BlockBandedMatrices/8oK1s/src/BlockSkylineMatrix.jl:264

This is using BlockBandedMatrices v0.12.10, and Debugger v0.7.8 on Julia v1.10.2.