Server Error in '/' Application.

Unable to translate Unicode character \uDBAD at index 166 to specified code page.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Text.EncoderFallbackException: Unable to translate Unicode character \uDBAD at index 166 to specified code page.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[EncoderFallbackException: Unable to translate Unicode character \uDBAD at index 166 to specified code page.]
   System.Text.EncoderExceptionFallbackBuffer.Fallback(Char charUnknown, Int32 index) +167
   System.Text.EncoderFallbackBuffer.InternalFallback(Char ch, Char*& chars) +279
   System.Text.UTF8Encoding.GetByteCount(Char* chars, Int32 count, EncoderNLS baseEncoder) +14561985
   System.Text.UTF8Encoding.GetByteCount(String chars) +58
   System.IO.BinaryWriter.Write(String value) +58
   System.Web.UI.ObjectStateFormatter.SerializeValue(SerializerBinaryWriter writer, Object value) +299

[ArgumentException: Error serializing value '<p><strong><em>Manufactured from chemically inert PTFE with excellent chemical resistance, high mechanical strength and high temperature resistance between -200°C to �°C. Flat base enables a flat contact with the surface for effective heat transfer.</em></strong></p><p><a href='http://catalog.isolab.de/#66'><strong>Please press to product details</strong></a></p>' of type 'System.String.']
   System.Web.UI.ObjectStateFormatter.SerializeValue(SerializerBinaryWriter writer, Object value) +4336
   System.Web.UI.ObjectStateFormatter.Serialize(Object stateGraph, Purpose purpose) +97
   System.Web.UI.Util.SerializeWithAssert(IStateFormatter2 formatter, Object stateGraph, Purpose purpose) +65
   System.Web.UI.HiddenFieldPageStatePersister.Save() +127
   System.Web.UI.Page.SaveAllState() +924
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +4015


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4676.0