Trouble with KNN example

[ablaom]

In examples/knndtw.jl the line

ucr_archive_datasets = DataSets.list_available_datasets(UCRArchive)

is leading to this exception:

failed to find end of centeral directory record
error(::String)@error.jl:35
_find_sigoffset(::IOStream, ::UInt32)@ZipFile.jl:288
_find_enddiroffset@ZipFile.jl:293[inlined]
ZipFile.Reader(::IOStream, ::Bool)@ZipFile.jl:106
Reader@ZipFile.jl:120[inlined]
unzip(::String, ::String)@utils.jl:25
download_datasets(::Nothing, ::Nothing, ::Bool)@UCRArchive.jl:222
var"#load_dataset_metadata#5"(::Bool, ::typeof(TimeSeriesClassification.DataSets._Loader.load_dataset_metadata), ::Type{TimeSeriesClassification.DataSets.Loaders._UCRArchiveLoader.UCRArchive}, ::Symbol, ::Nothing, ::Nothing)@UCRArchive.jl:284
load_dataset_metadata@UCRArchive.jl:277[inlined]
load_dataset_metadata(::Type{TimeSeriesClassification.DataSets.Loaders._UCRArchiveLoader.UCRArchive}, ::Symbol)@UCRArchive.jl:277
top-level scope@[Local: 1](http://localhost:1234/edit?id=906ce0f6-5bfd-11ee-1049-9184a6a60f1c#)[inlined]