another schema violation

[ericphanson]

similar to #167

julia> signals
Arrow.Table with 15 rows, 11 columns, and schema:
 :recording                  Base.UUID
 :file_path                  String
 :file_format                String
 :span                       TimeSpans.TimeSpan
 :kind                       String
 :channels                   Vector{String} (alias for Array{String, 1})
 :sample_unit                String
 :sample_resolution_in_unit  Float64
 :sample_offset_in_unit      Float64
 :sample_type                String
 :sample_rate                Float64

julia> Tables.rowtable(signals)
ERROR: TypeError: in new, expected Vector{String}, got a value of type SubArray{String, 1, Arrow.List{String, Int32, Vector{UInt8}}, Tuple{UnitRange{Int64}}, true}
Stacktrace:
 [1] macro expansion
   @ ~/.julia/packages/Tables/YzCZp/src/namedtuples.jl:46 [inlined]
 [2] _iterate(rows::Tables.NamedTupleIterator{Tables.Schema{(:recording, :file_path, :file_format, :span, :kind, :channels, :sample_unit, :sample_resolution_in_unit, :sample_offset_in_unit, :sample_type, :sample_rate), Tuple{Base.UUID, String, String, TimeSpans.TimeSpan, String, Vector{String}, String, Float64, Float64, String, Float64}}, Tables.RowIterator{Tables.CopiedColumns{Arrow.Table}}}, st::Tuple{})
   @ Tables ~/.julia/packages/Tables/YzCZp/src/namedtuples.jl:37
 [3] iterate
   @ ~/.julia/packages/Tables/YzCZp/src/namedtuples.jl:58 [inlined]
 [4] iterate
   @ ~/.julia/packages/Tables/YzCZp/src/namedtuples.jl:57 [inlined]
 [5] copyto!(dest::Vector{NamedTuple{(:recording, :file_path, :file_format, :span, :kind, :channels, :sample_unit, :sample_resolution_in_unit, :sample_offset_in_unit, :sample_type, :sample_rate), Tuple{Base.UUID, String, String, TimeSpans.TimeSpan, String, Vector{String}, String, Float64, Float64, String, Float64}}}, src::Tables.NamedTupleIterator{Tables.Schema{(:recording, :file_path, :file_format, :span, :kind, :channels, :sample_unit, :sample_resolution_in_unit, :sample_offset_in_unit, :sample_type, :sample_rate), Tuple{Base.UUID, String, String, TimeSpans.TimeSpan, String, Vector{String}, String, Float64, Float64, String, Float64}}, Tables.RowIterator{Tables.CopiedColumns{Arrow.Table}}})
   @ Base ./abstractarray.jl:843
 [6] _collect(cont::UnitRange{Int64}, itr::Tables.NamedTupleIterator{Tables.Schema{(:recording, :file_path, :file_format, :span, :kind, :channels, :sample_unit, :sample_resolution_in_unit, :sample_offset_in_unit, :sample_type, :sample_rate), Tuple{Base.UUID, String, String, TimeSpans.TimeSpan, String, Vector{String}, String, Float64, Float64, String, Float64}}, Tables.RowIterator{Tables.CopiedColumns{Arrow.Table}}}, #unused#::Base.HasEltype, isz::Base.HasLength)
   @ Base ./array.jl:608
 [7] collect(itr::Tables.NamedTupleIterator{Tables.Schema{(:recording, :file_path, :file_format, :span, :kind, :channels, :sample_unit, :sample_resolution_in_unit, :sample_offset_in_unit, :sample_type, :sample_rate), Tuple{Base.UUID, String, String, TimeSpans.TimeSpan, String, Vector{String}, String, Float64, Float64, String, Float64}}, Tables.RowIterator{Tables.CopiedColumns{Arrow.Table}}})
   @ Base ./array.jl:602
 [8] rowtable(itr::Arrow.Table)
   @ Tables ~/.julia/packages/Tables/YzCZp/src/namedtuples.jl:99
 [9] top-level scope
   @ REPL[15]:1

(jl_0M34Wq) pkg> st
      Status `/tmp/jl_0M34Wq/Project.toml`
  [fbe9abb3] AWS v1.41.0
  [1c724243] AWSS3 v0.8.3
  [e853f5be] Onda v0.13.6
  [bd369af6] Tables v1.4.3