I'm having this issue with my adaptive card, whenever I test my flow I receive the email in blank. I checked if the flow ran successfully and it did, the adaptive card is being written into the body of the email by the compose action where I'm putting my json code. My guess is that I'm missing something on the json file because I've been able to send sample templates doing the same process. Help will be very appreciated!!

<script type="application/adaptivecard+json">{
"type": "AdaptiveCard",
"version": "1.0",
"hideOriginalBody": true,
"body": [
{
"type": "TextBlock",
"text": "Deliverable Assessment",
"id": "Title",
"spacing": "Medium",
"horizontalAlignment": "Center",
"size": "ExtraLarge",
"weight": "Bolder",
"color": "Accent"
},
{
"type": "TextBlock",
"text": " Assessment",
"id": "acHeaderTagLine",
"separator": true
},
{
"type": "TextBlock",
"text": "Status after approval",
"weight": "Bolder",
"size": "ExtraLarge",
"spacing": "None",
"id": "acHeader"
},
{
"type": "TextBlock",
"text": "Please select the schedule option that corresponds the most to the deliverable.",
"id": "acPollQuestion",
"horizontalAlignment": "Left"
},
{
"type": "Input.ChoiceSet",
"placeholder": "Select from these choices",
"choices": [
{
"title": "Approved in Time",
"value": "Approved in Time"
},
{
"title": "Delayed by Review/Comment Process",
"value": "Delayed by Review/Comment Process"
}
],
"id": "acPollChoices",
"style": "expanded"
},
{
"type": "TextBlock",
"id": "Due Date",
"text": "Due Date:\n\n\n",
"wrap": true,
"size": "ExtraLarge",
"weight": "Bolder"
},
{
"type": "Container",
"spacing": "None",
"items": [
{
"type": "ColumnSet",
"columns": [
{
"type": "Column",
"width": "stretch",
"items": [
{
"type": "TextBlock",
"text": "@{outputs('reviewdue')}",
"color": "${if(@{outputs('reviewdue')} >= @{outputs('Actual_date')}, 'good', 'attention')}",
"spacing": "None"
}
],
"padding": "None"
}
],
"padding": "None"
}
],
"padding": "None"
},
{
"type": "ActionSet",
"id": "2e67f88c-562d-74d4-d1f8-3dd8bc034c17",
"actions": [
{
"type": "Action.Http",
"id": "4df0dd56-55f1-e015-b9fe-f73adabc00fa",
"title": "Submit",
"url": "https://messagecardplaygroundfn.azurewebsites.net/api/HttpPost?code=zJaYHdG4dZdPK0GTymwYzpaCtcPAPec8fTvc2flJRvahwigYWg3p0A==",
"method": "POST",
"body": "Submit"
}
]
}
],
"padding": "None",
"$schema": "http://adaptivecards.io/schemas/adaptive-card.json",
"@type": "AdaptiveCard",
"@context": "http://schema.org/extensions"
}
</script>