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我使用 React 成功地将我的代码部署到 AWS Amplify，并且可以通过为环境提供的 URL 访问应用程序。但是，当我启动 API 调用时，什么也没有发生。

ERROR   Uncaught Exception  {"errorType":"TypeError","errorMessage":"Cannot read property 'link_token' of undefined","stack":["TypeError: Cannot read property 'link_token' of undefined","    at /var/task/app.js:44:46","    at Immediate.<anonymous> (/var/task/node_modules/plaid/lib/wrapPromise.js:29:9)","    at processImmediate (internal/timers.js:461:21)"]}

我检查了 AWS 中的配置，可以看到分别在 Lambda、Dynamo 和 API Gateway 中创建的函数、存储和 API。但是，当我在 Amplify 中打开我的应用程序时，我没有看到创建的存储或 API。函数已创建。有没有什么东西可以导致函数被创建但存储和 API 不被创建？后端 JSON 配置（如下）包含我所期望的所有五个。

放大 backend-config.json

{
  "function": {
    "linktokenfunction": {
      "build": true,
      "providerPlugin": "awscloudformation",
      "service": "Lambda"
    },
    "onsuccessfunction": {
      "build": true,
      "providerPlugin": "awscloudformation",
      "service": "Lambda",
      "dependsOn": [
        {
          "category": "storage",
          "resourceName": "tutorialdb",
          "attributes": [
            "Name",
            "Arn"
          ]
        }
      ]
    }
  },
  "api": {
    "linktokenapi": {
      "service": "API Gateway",
      "providerPlugin": "awscloudformation",
      "dependsOn": [
        {
          "category": "function",
          "resourceName": "linktokenfunction",
          "attributes": [
            "Name",
            "Arn"
          ]
        }
      ]
    },
    "onsuccessapi": {
      "service": "API Gateway",
      "providerPlugin": "awscloudformation",
      "dependsOn": [
        {
          "category": "function",
          "resourceName": "onsuccessfunction",
          "attributes": [
            "Name",
            "Arn"
          ]
        }
      ]
    }
  },
  "storage": {
    "tutorialdb": {
      "service": "DynamoDB",
      "providerPlugin": "awscloudformation"
    }
  }
}

4

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