Error reading package

System.AggregateException: One or more errors occurred. (The archive entry was compressed using an unsupported compression method.) (The given header was not found.)
 ---> System.IO.InvalidDataException: The archive entry was compressed using an unsupported compression method.
   at System.IO.Compression.Inflater.Inflate(FlushCode flushCode)
   at System.IO.Compression.Inflater.ReadInflateOutput(Byte* bufPtr, Int32 length, FlushCode flushCode, Int32& bytesRead)
   at System.IO.Compression.Inflater.ReadOutput(Byte* bufPtr, Int32 length, Int32& bytesRead)
   at System.IO.Compression.Inflater.InflateVerified(Byte* bufPtr, Int32 length)
   at System.IO.Compression.DeflateStream.CopyToStream.Write(Byte[] buffer, Int32 offset, Int32 count)
   at System.IO.MemoryStream.CopyTo(Stream destination, Int32 bufferSize)
   at System.IO.Compression.DeflateStream.CopyToStream.CopyFromSourceToDestination()
   at System.IO.Compression.DeflateStream.CopyTo(Stream destination, Int32 bufferSize)
   at Relativity.APIReference.Entry.OpenAsync() in C:\Dev\Relativity.APIReference\Data\PackageData.cs:line 86
   at Relativity.APIReference.Entry.Open() in C:\Dev\Relativity.APIReference\Data\PackageData.cs:line 33
   at Relativity.APIReference.PackageData.ReadNuspec(Entry entry) in C:\Dev\Relativity.APIReference\Data\PackageData.cs:line 372
   at Relativity.APIReference.PackageData.ReadAsync(HttpClient httpClient, String packageUri) in C:\Dev\Relativity.APIReference\Data\PackageData.cs:line 365
   at Relativity.APIReference.PackageData.PackageDataCache.ReadPackageFromUrl(PackageData package, HttpClient httpClient, CancellationToken token) in C:\Dev\Relativity.APIReference\Data\PackageData.cs:line 602
   at Relativity.APIReference.PackageData.PackageDataCache.GetValueAsync(String arg0, PackageVersion arg1, HttpClient httpClient, CancellationToken token) in C:\Dev\Relativity.APIReference\Data\PackageData.cs:line 578
   --- End of inner exception stack trace ---
 ---> (Inner Exception #1) System.InvalidOperationException: The given header was not found.
   at System.Net.Http.Headers.HttpHeaders.GetValues(HeaderDescriptor descriptor)
   at Relativity.APIReference.PackageData.ReadEntriesAsync(HttpClient client, String file) in C:\Dev\Relativity.APIReference\Data\PackageData.cs:line 0
   at Relativity.APIReference.PackageData.ReadAsync(HttpClient httpClient, String packageUri) in C:\Dev\Relativity.APIReference\Data\PackageData.cs:line 303
   at Relativity.APIReference.PackageData.PackageDataCache.ReadPackageFromUrl(PackageData package, HttpClient httpClient, CancellationToken token) in C:\Dev\Relativity.APIReference\Data\PackageData.cs:line 602
   at Relativity.APIReference.PackageData.PackageDataCache.GetValueAsync(String arg0, PackageVersion arg1, HttpClient httpClient, CancellationToken token) in C:\Dev\Relativity.APIReference\Data\PackageData.cs:line 578<---