Error reading package

System.AggregateException: One or more errors occurred. (Exception of type 'System.OutOfMemoryException' was thrown.) (The given header was not found.)
 ---> System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.
   at System.Xml.XmlTextReaderImpl.InitStreamInput(Uri baseUri, String baseUriStr, Stream stream, Byte[] bytes, Int32 byteCount, Encoding encoding)
   at System.Xml.XmlTextReaderImpl.FinishInitStream()
   at System.Xml.XmlTextReaderImpl..ctor(Stream stream, Byte[] bytes, Int32 byteCount, XmlReaderSettings settings, Uri baseUri, String baseUriStr, XmlParserContext context, Boolean closeInput)
   at System.Xml.XmlReaderSettings.CreateReader(Stream input, Uri baseUri, String baseUriString, XmlParserContext inputContext)
   at System.Xml.Linq.XDocument.Load(Stream stream, LoadOptions options)
   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<---