question

Amazon alexa skill set suddenly stopped working. It was working fine, and we did not do any changes. Now for any request it is giving "The response is invalid" error.

I checked the response and did not see any issue in it. If i test my lambda service, it is working fine.

Not sure what is happening, we got an important demo over a weekend and it stopped working. Appreciate any inputs/suggestion.

Please find the Request/Response from Lamba:

Request:

{
  "session": {
    "new": true,
    "sessionId": "SessionId.48a8ba32-a3a6-47d1-96c6-62499eaa68dc",
    "application": {
      "applicationId": "amzn1.ask.skill.13bee533-aaf4-45a1-904e-2e9ca497802d"
    },
    "attributes": {},
    "user": {
      "userId": "amzn1.ask.account.AEZSVYV6NYFWLXB5USIA5MQVZJSDG7GNJGT26G3SR2EPMGNM6FVS26737SMXKP7LB5J3WWG2JMHXZ727QPBUEBZXG3FRXMDHUB2XLBAV75ZKMOGMTI6OI5IHUI6B2ZKKUYGPAV2WZ5EBNHOEAJTKNKAWHTZ5NKMZ4EZOHW26PUZI3FJWKDHAIGI6YQXDH2MXCDAFQC63Q3F76VI"
    }
  },
  "request": {
    "type": "IntentRequest",
    "requestId": "EdwRequestId.1b351eaa-e4fa-4788-b458-d28c717fafb6",
    "intent": {
      "name": "SalesVolumeIntent",
      "slots": {
        "SalesRegion": {
          "name": "SalesRegion",
          "value": "central"
        }
      }
    },
    "locale": "en-US",
    "timestamp": "2017-09-29T21:50:32Z"
  },
  "context": {
    "AudioPlayer": {
      "playerActivity": "IDLE"
    },
    "System": {
      "application": {
        "applicationId": "amzn1.ask.skill.13bee533-aaf4-45a1-904e-2e9ca497802d"
      },
      "user": {
        "userId": "amzn1.ask.account.AEZSVYV6NYFWLXB5USIA5MQVZJSDG7GNJGT26G3SR2EPMGNM6FVS26737SMXKP7LB5J3WWG2JMHXZ727QPBUEBZXG3FRXMDHUB2XLBAV75ZKMOGMTI6OI5IHUI6B2ZKKUYGPAV2WZ5EBNHOEAJTKNKAWHTZ5NKMZ4EZOHW26PUZI3FJWKDHAIGI6YQXDH2MXCDAFQC63Q3F76VI"
      },
      "device": {
        "supportedInterfaces": {}
      }
    }
  },
  "version": "1.0"
}

Response:

{
  "version": "1.0",
  "response": {
    "outputSpeech": {
      "text": "For past one month the sales volume for central region is dollar 139674.26",
      "type": "PlainText"
    },
    "shouldEndSession": true,
    "reprompt": {
      "outputSpeech": {
        "text": "For past one month the sales volume for central region is dollar 139674.26",
        "type": "PlainText"
      }
    },
    "card": {
      "content": "SessionSpeechlet - For past one month the sales volume for central region is dollar 139674.26",
      "type": "Simple",
      "title": "SessionSpeechlet - Sales_Volume"
    }
  },
  "sessionAttributes": {}
}