Server Error in '/' Application.

Unable to translate Unicode character \uDB9D at index 401 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 \uDB9D at index 401 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 \uDB9D at index 401 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>For temperature measurement in liquids, semi-solids. Specially offers practical solutions with foodstuff. Featured with a foldable stainless steel probe with 85 mm length which can move 180° angle. Probe can easily be inserted into semi-solid samples. Offers temperature measurement on a large and clear 15 x 30 mm LCD display. Temperature measurement range is -58°F to °F or -50°C to �°C with  0,1 resolution. °F & °C values are exchangeable by a switch control inside the battery cover. Water resistant sturdy plastic housing offers long life cycle.</em></strong></p><p><a href='http://catalog.isolab.de/#244'><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