Catching Errors

Quick tip for debugging errors in your code steps

To capture an error message after a code step execution, use a try...catch statement to flag that an error is present and pass the message into a variable that can be returned in a text or speak step.

477477

Code Step Catch Error

Sample Project file

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    "name": "Code Block // Catch Errors",
    "creatorID": 81810,
    "teamID": "9YnzG0XEbK",
    "image": "https://s3.amazonaws.com/com.getstoryflow.api.images/1592498945123-icons8-error.png",
    "platformData": {
      "products": {}
    },
    "members": [],
    "devVersion": "621a46bb12fa84001c7a29be",
    "privacy": "private",
    "platform": "alexa",
    "_version": 1.2,
    "prototype": {
      "nlp": {
        "type": "LUIS",
        "appID": "4682741d-e3ac-4550-b724-8573739efb9e",
        "resourceID": "https://us-0.cognitiveservices.azure.com/"
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      "data": {},
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            "name": "VF.HELP",
            "slots": [],
            "inputs": [
              {
                "text": "help"
              },
              {
                "text": "help me"
              },
              {
                "text": "i need help"
              },
              {
                "text": "Help"
              }
            ]
          },
          {
            "key": "VF.NO",
            "name": "VF.NO",
            "slots": [],
            "inputs": [
              {
                "text": "no"
              },
              {
                "text": "nope"
              },
              {
                "text": "nay"
              },
              {
                "text": "nah"
              },
              {
                "text": "no way"
              },
              {
                "text": "negative"
              },
              {
                "text": "No"
              }
            ]
          },
          {
            "key": "VF.YES",
            "name": "VF.YES",
            "slots": [],
            "inputs": [
              {
                "text": "yes"
              },
              {
                "text": "yea"
              },
              {
                "text": "ok"
              },
              {
                "text": "okay"
              },
              {
                "text": "yup"
              },
              {
                "text": "ya"
              },
              {
                "text": "sure"
              },
              {
                "text": "Yes"
              }
            ]
          },
          {
            "key": "VF.STOP",
            "name": "VF.STOP",
            "slots": [],
            "inputs": [
              {
                "text": "stop"
              },
              {
                "text": "Stop"
              }
            ]
          }
        ],
        "slots": []
      }
    },
    "createdAt": "2022-02-26T15:26:51.000Z"
  },
  "version": {
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    "projectID": "621a46bb12fa84001c7a29bd",
    "creatorID": 81810,
    "name": "Code Block // Catch Errors",
    "variables": [
      "access_token",
      "error",
      "errorMessage",
      "debug"
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        "hasAds": false,
        "summary": "Enter your summary for the skill Code Block Catch Errors",
        "invocationName": "Code Block Catch Errors",
        "locales": [
          "en-US"
        ],
        "category": null,
        "personal": false,
        "keywords": "",
        "smallIcon": "https://s3.amazonaws.com/com.getstoryflow.api.images/1592498948485-icons8-error.png",
        "largeIcon": "https://s3.amazonaws.com/com.getstoryflow.api.images/1592498945123-icons8-error.png",
        "description": "Enter your description for the skill Code Block Catch Errors",
        "invocations": [
          "open Code Block Catch Errors",
          "start Code Block Catch Errors",
          "launch Code Block Catch Errors"
        ],
        "hasPurchase": false,
        "forChildren": false,
        "instructions": "Sample Instruction",
        "privacyPolicy": "https://creator.voiceflow.com/creator/terms?name=Nicolas%20Arcay&skill=Code%20Block%20//%20Catch%20Errors&children=false",
        "termsAndConditions": "https://creator.voiceflow.com/creator/terms?name=Nicolas%20Arcay&skill=Code%20Block%20//%20Catch%20Errors&children=false",
        "updatesDescription": ""
      },
      "settings": {
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          "voice": "Alexa",
          "content": ""
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        "repeat": "ALL",
        "events": null,
        "session": {
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        "customInterface": false
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          "name": "AMAZON.HelpIntent",
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          "name": "AMAZON.NextIntent",
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          "inputs": []
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          "inputs": []
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          "inputs": []
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          "slots": [],
          "inputs": []
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      "status": {
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              {
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              }
            ]
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                "text": "no"
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                "text": "nope"
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              {
                "text": "nay"
              },
              {
                "text": "nah"
              },
              {
                "text": "no way"
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                "text": "negative"
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                "text": "No"
              }
            ]
          },
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                "text": "yes"
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                "text": "yea"
              },
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                "text": "ok"
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              {
                "text": "okay"
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              {
                "text": "yup"
              },
              {
                "text": "ya"
              },
              {
                "text": "sure"
              },
              {
                "text": "Yes"
              }
            ]
          },
          {
            "key": "VF.STOP",
            "name": "VF.STOP",
            "slots": [],
            "inputs": [
              {
                "text": "stop"
              },
              {
                "text": "Stop"
              }
            ]
          }
        ],
        "slots": []
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      "context": {
        "stack": [
          {
            "storage": {},
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            "programID": "621a46bb12fa84001c7a29c0"
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        ],
        "variables": {}
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      "settings": {},
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    "topics": [
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