意外的类型：为AWS Amplify Datastore生成模型时的__Schema 我尝试过：

如何解决意外的类型：为AWS Amplify Datastore生成模型时的__Schema 我尝试过：

我已经设置了一个webpack / react项目以使用AWS Amplify进行身份验证，并且我正在遵循 AWS Amplify DataStore Getting Started Guide 设置对数据存储区的graphql API的访问权限，但是当我尝试使用yarn amplify-modelgen或amplify codegen models生成模型文件时，我收到错误Unexpected type: __Schema，并且没有将模型生成到{{1 }}目录。

我尝试过：

• 使用“入门指南”中的示例架构以及下面的自定义schema.graphql生成模型，并且都返回相同的错误。
• 删除node_modules，yarn.lock并运行/Users/username/Projects/project/src/models
• 已确认我的yarn cache clean文件夹中没有graphql目录
• 在package.json中添加“分辨率”以指定我在node_modules文件夹中拥有的graphql版本
• 试图从我的客户项目和我的yarn全局软件包中删除graphql npm软件包。以下是我的/Users/username/Projects/project/node_modules和package.json，但我相信@ aws-amplify / cli npm软件包将其用作依赖项。

我不确定还有什么尝试的方法，我们将不胜感激。以下是一些相关文件，如果需要，我可以提供更多文件。

当我将NODE_ENV环境变量设置为yarn global list时，我也遇到了错误，但是通过将我的NODE_ENV设置为NODE_ENV=development可以解决此错误，但是我相信这可能是相关的。

NODE_ENV=production

运行Ensure that there is only one instance of "graphql" in the node_modules directory. If different versions of "graphql" are the dependencies of other relied on modules,use "resolutions" to ensure only one version is installed. 或yarn amplify-modelgen时出错

amplify codegen models

path / to / project / amplify / backend / api / project / schema.graphql

$ yarn amplify-modelgen
yarn run v1.22.5
$ node amplify/scripts/amplify-modelgen.js
Running codegen...

The following types do not have '@auth' enabled. Consider using @auth with @model
         - Hl7v2
Learn more about @auth here: https://docs.amplify.aws/cli/graphql-transformer/directives#auth


GraphQL schema compiled successfully.

Edit your schema at /Users/username/Projects/project/amplify/backend/api/projectname/schema.graphql or place .graphql files in a directory at /Users/username/Projects/project/amplify/backend/api/projectname/schema
Unexpected type: __Schema
Error: Unexpected type: __Schema
    at invariant (/Users/username/.config/yarn/global/node_modules/@graphql-tools/utils/node_modules/graphql/jsutils/invariant.js:12:11)
    at Object.printType (/Users/username/.config/yarn/global/node_modules/@graphql-tools/utils/node_modules/graphql/utilities/schemaPrinter.js:147:26)
    at correctType (/Users/username/.config/yarn/global/dist/utils/src/print-schema-with-directives.js:48:23)
    at Object.printSchemaWithDirectives (/Users/username/.config/yarn/global/dist/utils/src/print-schema-with-directives.js:15:33)
    at Object.exports.plugin (/Users/username/.config/yarn/global/node_modules/amplify-codegen/node_modules/amplify-codegen-appsync-model-plugin/src/plugin.ts:44:23)
    at Object.executePlugin (/Users/username/.config/yarn/global/node_modules/amplify-codegen/node_modules/@graphql-codegen/core/src/execute-plugin.ts:54:12)
    at /Users/username/.config/yarn/global/node_modules/amplify-codegen/node_modules/@graphql-codegen/core/src/codegen.ts:74:28
    at Array.map (<anonymous>)
    at Object.codegen (/Users/username/.config/yarn/global/node_modules/amplify-codegen/node_modules/@graphql-codegen/core/src/codegen.ts:61:21)
    at /Users/username/.config/yarn/global/node_modules/amplify-codegen/src/commands/models.js:54:23
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

纱线全局列表

type Hl7v2 @model {
  messageId: ID!
  messageType: String
  messageVersion: String
  sendingAppName: String
  sendingFacilityName: String
  receivingAppName: String
  receivingFacilityName: String
  dateOfMessage: String
  messageControlId: String
  processingId: String
  messageString: String
  segments: [String]
}

type User @model @auth(rules: [{ allow: owner }]) {
  userId: ID!
  createdAt: AWSDateTime!
  updatedAt: AWSDateTime!
  email: String!
  clientId: String!
  organizationName: String
  firstName: String
  lastName: String
  street1: String
  street2: String
  city: String
  state: String
  zip: String
  country: String
  phone: String
  apiCredentials: [ApiCredential]
  billingId: String
  requestHistory: String
}

type ApiCredential {
  createdAt: AWSDateTime!
  updatedAt: AWSDateTime!
  credentialId: ID!
  type: String!
  subscriptionPlan: String
  subscriptionStatus: String
  appId: String
  appSecret: String
}

package.json依赖项

yarn global v1.22.5
warning mini-css-extract-plugin@0.5.0: Invalid bin field for "mini-css-extract-plugin".
info "@aws-amplify/cli@4.30.0" has binaries:
   - amplify
info "create-react-app@3.4.1" has binaries:
   - create-react-app
info "eslint@6.8.0" has binaries:
   - eslint
info "expo-cli@3.28.2" has binaries:
   - expo
   - expo-cli
info "firebase-tools@8.13.1" has binaries:
   - firebase
info "flow-typed@2.6.2" has binaries:
   - flow-typed
info "ignite-cli@3.5.3" has binaries:
   - ignite
info "meta@2.2.14" has binaries:
   - meta
info "node-gyp@5.1.1" has binaries:
   - node-gyp
info "now@12.1.14" has binaries:
   - now
info "npm-check-updates@2.15.0" has binaries:
   - npm-check-updates
   - ncu
info "prettier@1.19.1" has binaries:
   - prettier
info "react-devtools@3.6.3" has binaries:
   - react-devtools
info "react-native-cli@2.0.1" has binaries:
   - react-native
info "serverless@2.8.0" has binaries:
   - serverless
   - sls
info "typescript@3.9.7" has binaries:
   - tsc
   - tsserver
✨  Done in 50.90s.