Mictosoft Teams chat window crashes when chatbot conversation is opened

Sid Uppal 

Here is the whole flow with adaptive card. The last condition just posts a message to a Team's chat and records the result in a SharePoint list.

{
    "$schema": "http://adaptivecards.io/schemas/adaptive-card.json",
    "type": "AdaptiveCard",
    "version": "1.0",
    "body": [
        {
            "type": "TextBlock",
            "text": "WFH Reminder",
            "id": "Title",
            "spacing": "Medium",
            "horizontalAlignment": "Center",
            "size": "ExtraLarge",
            "weight": "Bolder",
            "color": "Accent"
        },
        {
            "type": "TextBlock",
            "text": "Are you working from home today?",
            "id": "acPollQuestion"
        },
        {
            "type": "Input.ChoiceSet",
            "placeholder": "Are you working from home today?",
            "choices": [
                {
                    "title": "Yes",
                    "value": "Yes"
                },
                {
                "title": "No",
                "value": "No"
            },
            ],
            "id": "acPollChoices",
            "style": "expanded"
        }
    ],
    "actions": [
        {
            "type": "Action.Submit",
            "title": "Submit",
            "id": "btnSubmit"
        }
    ]
}