Exception: The response ended prematurely

[Keithenneu]

System.IO.IOException: The response ended prematurely, with at least 123456 additional bytes expected.
   at System.Net.Http.HttpConnection.ContentLengthReadStream.ReadAsync(Memory`1 buffer, CancellationToken cancellationToken)
   at BSU.BSO.BsoRepoMod.CopyToWithProgress(Stream source, Stream destination, Int32 bufferSize, IProgress`1 progress, CancellationToken cancellationToken) in D:\a\BSU\BSU\BSU.BSO\BsoRepoMod.cs:line 183
   at BSU.BSO.BsoRepoMod.DownloadTo(String path, IFileSystem fileSystem, IProgress`1 progress, CancellationToken cancellationToken) in D:\a\BSU\BSU\BSU.BSO\BsoRepoMod.cs:line 174