E learning not being able to review

Hello, when it comes to publishing my e learning for review it goes to upload and then crashes it comes up with this being the problem.

 <?xml version="1.0" encoding="utf-16"?>
<ErrorReport xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<UserId>aid|fb9866df-0f04-4ca3-9237-f7865d5dccaa</UserId>
<HardwareId>L4AA9-UNAVL-T3FU0-1AUUV-VT3PR</HardwareId>
<Message>Unable to translate Unicode character \uD83D at index 186 to specified code page.</Message>
<StackTrace> at bool System.Text.EncoderExceptionFallbackBuffer.Fallback(char charUnknown, int index)
at bool System.Text.EncoderFallbackBuffer.InternalFallback(char ch, ref Char* chars)
at int System.Text.UTF8Encoding.GetBytes(Char* chars, int charCount, Byte* bytes, int byteCount, EncoderNLS baseEncoder)
at int System.Text.EncoderNLS.GetBytes(Char* chars, int charCount, Byte* bytes, int byteCount, bool flush)
at int System.Text.EncoderNLS.GetBytes(char[] chars, int charIndex, int charCount, byte[] bytes, int byteIndex, bool flush)
at void System.IO.StreamWriter.Flush(bool flushStream, bool flushEncoder)
at void System.IO.StreamWriter.Dispose(bool disposing)
at void System.IO.TextWriter.Dispose()
at void System.IO.File.InternalWriteAllText(string path, string contents, Encoding encoding, bool checkHost)
at void System.IO.File.WriteAllText(string path, string contents)
at void Articulate.Player.PlayerWriter.a(bwFonts A_0)
at void Articulate.Player.PlayerWriter.b(bwFonts A_0, bwFrame A_1)
at bool Articulate.Player.PlayerWriter.Write(IPlayerContentProvider contentProvider)
at void ps.n()
at void Articulate.Design.Publish.TargetContext+PublishBackgroundWorker.OnDoWork(DoWorkEventArgs e)
at void Articulate.ComponentModel.STABackgroundWorker.a(object A_0)</StackTrace>
</ErrorReport>

Does this mean anything to anyone ?