Receive an error after clicking carousel item - dialogflow-es

Question

We have an action running in production just fine. It has just started returning an error after trying to click or invoke an item from a carousel.
Steps to reproduce are as follows
Talk to Action
Carosel loads fine
Invoke any item in Carousel via click or voice
receive the error
Sorry, {action} is not responding at this time. Please try again later.
Here is a snippet of how it is being built.
There is nothing reported as an error in stackdriver logs
/**
* #description Build the Carousel
* #private
* #static
* #param {CardListItem[]} listItems - Array of CardListItem to transform
* #returns {Carousel}
* Returns a Carousel
* #memberof TemplateBuilder
*/
private static getCarousel(listItems: CardListItem[]): Carousel {
const items = [] as GoogleActionsV2UiElementsCarouselSelectCarouselItem[];
listItems = this.sortListTemplateListItemsByGoogleIndexAscending(listItems);
for (const listItem of listItems) {
if (listItem.googleIndex) {
items.push(this.getCarouselItem(listItem));
}
}
return new Carousel({
items,
display: 'DEFAULT',
});
}
/**
* #description Build a CarouselItem
* #private
* #static
* #param {CardListItem} data - Template data of type ListTemplateData
* #returns {GoogleActionsV2UiElementsCarouselSelectCarouselItem}
* Returns a Carousel Item
* #memberof TemplateBuilder
*/
private static getCarouselItem(data: CardListItem): GoogleActionsV2UiElementsCarouselSelectCarouselItem {
const title = data.textContent ? this.convertToPlainText(data.textContent) : null;
const imageUrl = typeof data.image === 'string' ? data.image : data.image.imageUrl;
return {
optionInfo: {
key: data.intentHandler || data.token,
synonyms: [],
} as GoogleActionsV2OptionInfo,
image: new Image({
url: this.getImageURL(imageUrl),
alt: title,
height: null,
width: null,
}),
title,
} as GoogleActionsV2UiElementsCarouselSelectCarouselItem;
}
Response from the web hook
{
"payload": {
"google": {
"expectUserResponse": true,
"systemIntent": {
"intent": "actions.intent.OPTION",
"data": {
"#type": "type.googleapis.com/google.actions.v2.OptionValueSpec",
"carouselSelect": {
"items": [
{
"optionInfo": {
"key": "AccountBalanceIntent",
"synonyms": []
},
"image": {
"url": "https://aglvoiceprod.blob.core.windows.net/images/google/thumb-account.jpg",
"accessibilityText": "Account Balance",
"height": null,
"width": null
},
"title": "Account Balance"
},
{
"optionInfo": {
"key": "UsageCostIntent",
"synonyms": []
},
"image": {
"url": "https://aglvoiceprod.blob.core.windows.net/images/google/thumb-usage.jpg",
"accessibilityText": "Energy Usage",
"height": null,
"width": null
},
"title": "Energy Usage"
},
{
"optionInfo": {
"key": "BillAmountIntent",
"synonyms": []
},
"image": {
"url": "https://aglvoiceprod.blob.core.windows.net/images/google/thumb-bill.jpg",
"accessibilityText": "Bill History",
"height": null,
"width": null
},
"title": "Bill History"
},
{
"optionInfo": {
"key": "EnergyInsightsIntent",
"synonyms": []
},
"image": {
"url": "https://aglvoiceprod.blob.core.windows.net/images/google/thumb-insights.jpg",
"accessibilityText": "Energy Insights",
"height": null,
"width": null
},
"title": "Energy Insights"
},
{
"optionInfo": {
"key": "BillDueDateIntent",
"synonyms": []
},
"image": {
"url": "https://aglvoiceprod.blob.core.windows.net/images/google/thumb-bill-due-date.jpg",
"accessibilityText": "Bill Due Date",
"height": null,
"width": null
},
"title": "Bill Due Date"
},
{
"optionInfo": {
"key": "EnergyAlertIntent",
"synonyms": []
},
"image": {
"url": "https://aglvoiceprod.blob.core.windows.net/images/google/thumb-alert.jpg",
"accessibilityText": "Energy Alert",
"height": null,
"width": null
},
"title": "Energy Alert"
},
{
"optionInfo": {
"key": "EnergyTipIntent",
"synonyms": []
},
"image": {
"url": "https://aglvoiceprod.blob.core.windows.net/images/google/thumb-tip.jpg",
"accessibilityText": "Energy Tip",
"height": null,
"width": null
},
"title": "Energy Tip"
}
],
"imageDisplayOptions": "DEFAULT"
}
}
},
"richResponse": {
"items": [
{
"simpleResponse": {
"textToSpeech": "<speak>Hi Brent,<break time=\"200ms\"/> welcome to <say-as interpret-as=\"spell-out\">AGL</say-as>.<break time=\"400ms\"/> With our latest update,<break time=\"200ms\"/> you can now set up Energy Alerts.<break time=\"300ms\"/> For other ways that I can help,<break time=\"200ms\"/> say \"more information\".<break time=\"350ms\"/> How can I help you today?</speak>",
"displayText": "Hi Brent, welcome to AGL. With our latest update, you can now set up Energy Alerts. For other ways that I can help, say \"more information\". How can I help you today?"
}
}
],
"suggestions": [
{
"title": "Monthly Billing"
},
{
"title": "eBilling"
},
{
"title": "Payment Extension"
},
{
"title": "Feedback"
},
{
"title": "Help"
}
]
}
}
},
"outputContexts": [
{
"name": "projects/agl-prod-603de/agent/sessions/ABwppHESxXC8wRCVt2-hskWfsZwxEoH54G6jm_yTj2oIiETa1V3EbgRGj86H7Ys5bEKG0YrzkL0fE9Mpnhk/contexts/_actions_on_google",
"lifespanCount": 99,
"parameters": {
"data": "{\"sessionLaunched\":true,\"skippedIntents\":[],\"possibleIntents\":[],\"followUp\":{\"yes\":{\"data\":null,\"intent\":\"Unhandled\"},\"no\":{\"data\":null,\"intent\":\"Unhandled\"},\"fuelType\":{\"elec\":{\"data\":null,\"intent\":\"Unhandled\"},\"gas\":{\"data\":null,\"intent\":\"Unhandled\"},\"both\":{\"data\":null,\"intent\":\"Unhandled\"}},\"number\":{\"data\":null,\"intent\":\"Unhandled\",\"slotName\":null},\"period\":{\"data\":null,\"intent\":\"Unhandled\",\"slotName\":null}},\"lastIntent\":\"LaunchRequest\"}"
}
}
]
}
flow in simulator