Contentful Entry Model Output

cfclt.Program+FieldTypesEntry
NumberField: 5
StringField: String Field Value
DateTimeField: 7/23/2020 7:14:00 AM
RichTextField: <p>This is <strong>Formatted</strong> Text.</p>
Unhandled exception. System.NullReferenceException: Object reference not set to an instance of an object.
   at cfclt.Program.FieldTypesEntry.Render() in C:\temp\deliverystack\cfclt\Program.cs:line 34
   at cfclt.Program.Main(String[] args) in C:\temp\deliverystack\cfclt\Program.cs:line 50