failing alexa response

fail.json

{
    "version": "1.0",
    "sessionAttributes": {
        "Counter": 1,
        "QuizAnswer": "Jefferson City",
        "QuizItemIndex": 24,
        "QuizProperty": "Capital",
        "QuizScore": 0,
        "State": 1
    },
    "response": {
        "outputSpeech": {
            "type": "SSML",
            "ssml": "<speak>OK.  I will ask you 10 questions about the United States.  Here is your 1th question.  What is the  Capital of Missouri?</speak>"
        },
        "reprompt": {
            "outputSpeech": {
                "type": "SSML",
                "ssml": "<speak>Here is your 1th question.  What is the  Capital of Missouri?</speak>"
            }
        },
        "directives": [
            {
                "type": "Display.RenderTemplate",
                "template": {
                    "type": "ListTemplate1",
                    "token": "QUESTION",
                    "backButton": "HIDDEN",
                    "backgroundImage": {
                        "sources": [
                            {
                                "url": "https://m.media-amazon.com/images/G/01/mobile-apps/dex/alexa/alexa-skills-kit/tutorials/quiz-game/state_flag/1024x600/MO._TTH_.png"
                            }
                        ]
                    },
                    "title": "Question #1",
                    "textContent": {
                        "primaryText": {
                            "type": "RichText",
                            "text": "What is the  Capital of Missouri?"
                        },
                        "secondaryText": {
                            "type": "Plaintext"
                        },
                        "tertiaryText": {
                            "type": "Plaintext"
                        }
                    },
                    "listItems": [
                        {
                            "token": "item_1",
                            "textContent": {
                                "primaryText": {
                                    "type": "RichText",
                                    "text": "Jefferson City"
                                },
                                "secondaryText": {
                                    "type": "Plaintext"
                                },
                                "tertiaryText": {
                                    "type": "Plaintext"
                                }
                            }
                        },
                        {
                            "token": "item_2",
                            "textContent": {
                                "primaryText": {
                                    "type": "RichText",
                                    "text": "Cheyenne"
                                },
                                "secondaryText": {
                                    "type": "Plaintext"
                                },
                                "tertiaryText": {
                                    "type": "Plaintext"
                                }
                            }
                        },
                        {
                            "token": "item_3",
                            "textContent": {
                                "primaryText": {
                                    "type": "RichText",
                                    "text": "Trenton"
                                },
                                "secondaryText": {
                                    "type": "Plaintext"
                                },
                                "tertiaryText": {
                                    "type": "Plaintext"
                                }
                            }
                        }
                    ]
                }
            }
        ],
        "shouldEndSession": false
    }
}