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Object reference not set to an instance of an object.

   at lambda_method(Closure , ITradeshows )
   at Glass.Mapper.Sc.GlassHtml.NormalModeOutput[T](Expression`1 field, Expression`1 standardOutput, T model, SafeDictionary`1 dictionary) in D:\a\Glass.Mapper\Glass.Mapper\Source\Glass.Mapper.Sc\GlassHtml.cs:line 639
   at Glass.Mapper.Sc.GlassHtml.MakeEditable[T](Expression`1 field, Expression`1 standardOutput, T model, Object parameters, Context context, Database database, TextWriter writer) in D:\a\Glass.Mapper\Glass.Mapper\Source\Glass.Mapper.Sc\GlassHtml.cs:line 603

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