Botframework v4: Can't render cards
问题 This is the sample on Botframework v4 docs. But it does not work. It says "Can't Render Card" on the Microsoft bot emulator. What i'm trying to do is a carouselCard but this simple card from Microsoft's sample is already not working. { "type": "message", "text": "Plain text is ok, but sometimes I long for more...", "attachments": [ { "contentType": "application/vnd.microsoft.card.adaptive", "content": { "$schema": "http://adaptivecards.io/schemas/adaptive-card.json", "type": "AdaptiveCard",