Alexa 技能：无法将 undefined 或 null 转换为对象

Question

设置好所有内容后，我在测试 Alexa 开发人员的技能时遇到此错误 请求的技能响应有问题，然后我将 json 响应放在 lambda 测试中，我得到了以下

{ "errorType": "TypeError", "errorMessage": "Cannot convert undefined or null to object", "trace": [ "TypeError: Cannot convert undefined or null to object", " at Function.keys (<anonymous>)", " at Object.NewSession (/var/task/eventHandlers.js:28:20)", " at AlexaRequestEmitter.emit (events.js:198:13)", " at AlexaRequestEmitter.EventEmitter.emit (domain.js:448:20)", " at AlexaRequestEmitter.EmitEvent (/var/task/node_modules/alexa-sdk/lib/alexa.js:161:10)", " at AlexaRequestEmitter.HandleLambdaEvent (/var/task/node_modules/alexa-sdk/lib/alexa.js:124:23)", " at AlexaRequestEmitter.value (/var/task/node_modules/alexa-sdk/lib/alexa.js:74:31)", " at Runtime.exports.handler (/var/task/index.js:20:11)", " at Runtime.handleOnce (/var/runtime/Runtime.js:66:25)" ] }

Log output

以下部分显示了代码中的日志记录调用。这些对应于与此 Lambda 函数对应的 CloudWatch 日志组中的单个行。单击此处查看 CloudWatch 日志组。

START RequestId: f8127006-ae68-429b-b470-302b76bf3619 Version: $LATEST 2020-01-06T04:38:56.104Z f8127006-ae68-429b-b470-302b76bf3619 INFO Warning: Application ID is not set 2020-01-06T04:38:56.144Z f8127006-ae68-429b-b470-302b76bf3619 INFO {"eventType":"SessionStarted","event":{"userId":"amzn1.ask.account.AH5DAZ5QFPLU5NKA5XSU7PKCHUK4KCQTEUB3BBOSQ7COBQQ5EKW45X2445QZXZQJHO5HLXHIWSCPQ6TR2XYOZCPBG3GKDPQVWZK4WQN4OUWCNUW52WSLMZ2BBD4AANIR5SWIWQ5TJ6SSWN6KN5ZE73Q5UC6IBMONJ6MU6TRLLKFWUV3RKV7FE5P3SWODM23WJDXRVYBYDNZRRPY","sessionId":"amzn1.echo-api.session.92ab8d8e-8262-4f21-9f54-e556d78a8a6f","datestring":"2020-01-06T04:38:56.144Z"}} 2020-01-06T04:38:56.163Z f8127006-ae68-429b-b470-302b76bf3619 INFO Unexpected exception 'TypeError: Cannot convert undefined or null to object': TypeError: Cannot convert undefined or null to object at Function.keys (<anonymous>) at Object.NewSession (/var/task/eventHandlers.js:28:20) at AlexaRequestEmitter.emit (events.js:198:13) at AlexaRequestEmitter.EventEmitter.emit (domain.js:448:20) at AlexaRequestEmitter.EmitEvent (/var/task/node_modules/alexa-sdk/lib/alexa.js:161:10) at AlexaRequestEmitter.HandleLambdaEvent (/var/task/node_modules/alexa-sdk/lib/alexa.js:124:23) at AlexaRequestEmitter.value (/var/task/node_modules/alexa-sdk/lib/alexa.js:74:31) at Runtime.exports.handler (/var/task/index.js:20:11) at Runtime.handleOnce (/var/runtime/Runtime.js:66:25) 2020-01-06T04:38:56.163Z f8127006-ae68-429b-b470-302b76bf3619 ERROR Invoke Error {"errorType":"TypeError","errorMessage":"Cannot convert undefined or null to object","stack":["TypeError: Cannot convert undefined or null to object"," at Function.keys (<anonymous>)"," at Object.NewSession (/var/task/eventHandlers.js:28:20)"," at AlexaRequestEmitter.emit (events.js:198:13)"," at AlexaRequestEmitter.EventEmitter.emit (domain.js:448:20)"," at AlexaRequestEmitter.EmitEvent (/var/task/node_modules/alexa-sdk/lib/alexa.js:161:10)"," at AlexaRequestEmitter.HandleLambdaEvent (/var/task/node_modules/alexa-sdk/lib/alexa.js:124:23)"," at AlexaRequestEmitter.value (/var/task/node_modules/alexa-sdk/lib/alexa.js:74:31)"," at Runtime.exports.handler (/var/task/index.js:20:11)"," at Runtime.handleOnce (/var/runtime/Runtime.js:66:25)"]} END RequestId: f8127006-ae68-429b-b470-302b76bf3619 REPORT RequestId: f8127006-ae68-429b-b470-302b76bf3619 Duration: 96.25 ms Billed Duration: 100 ms Memory Size: 128 MB Max Memory Used: 102 MB Init Duration: 567.43 ms

我已经尝试添加未处理的函数但没有任何反应我无法理解这个问题请帮忙！！

Answer 1

调试此类编码错误的最简单方法是使用 'local debugging'，这样您就可以在 IDE 中单步执行代码。这比在 ASK 响应中使用普通堆栈跟踪或查看 CloudWatch 日志要方便得多。

请看https://developer.amazon.com/blogs/alexa/post/77c8f0b9-e9ee-48a9-813f-86cf7bf86747/setup-your-local-environment-for-debugging-an-alexa-skill

Answer 2

npm 包 alexa-sdk 已弃用，不再受支持：https://github.com/alexa/alexa-skills-kit-sdk-for-nodejs（有关信息，请参阅本页顶部横幅）。

建议您使用 ask-sdk 或 ask-sdk-core 前进（ASK SDK V2）。