这个问题通常是在使用AWS Amplify构建SSR（Server-Side Rendering服务端渲染）应用程序时出现的，它不支持基本身份验证。要解决这个问题，请将你的应用程序配置更改为使用AWS Cognito进行身份验证，或使用其他的身份验证方法。这是一个使用AWS Cognito和API Gateway的身份验证示例：

首先安装AWS Amplify和AWS CLI：

npm install -g @aws-amplify/cli
npm install aws-cli

然后，使用AWS CLI创建一个新API Gateway：

aws apigateway create-rest-api --name MyApi --region us-east-1

接下来，配置AWS Amplify以使用AWS Cognito进行身份验证。在amplify/backend/auth/myauth/parameters.json文件中，添加以下内容：

{
  "UserPoolId": "us-east-1_xxxxxxxxx",
  "AppClientId": "xxxxxxxxxxxxxxxxxxxxxxxxxx",
  "AppClientSecret": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
}

然后，在amplify/backend/auth/myauth/template.yaml中添加以下内容：

Resources:
  MyAuthUserPoolClient:
    Type: 'AWS::Cognito::UserPoolClient'
    Properties:
      AllowedOAuthFlowsUserPoolClient: true
      AllowedOAuthScopes:
        - 'aws.cognito.signin.user.admin'
      ClientName: 'myclient'
      GenerateSecret: false
      UserPoolId: !Ref UserPool
  MyAuthUserPoolDomain:
    Type: 'AWS::Cognito::UserPoolDomain'
    Properties:
      Domain: 'mydomain'
      UserPoolId: !Ref UserPool
  MyAuthIdentityPool:
    Type: 'AWS::Cognito::IdentityPool'
    Properties:
      AllowUnauthenticatedIdentities: false
      CognitoIdentityProviders:
        - ClientId: !Ref MyAuthUserPoolClient
          ProviderName: !GetAtt 'UserPoolProvider.ProviderName'
      IdentityPoolName: 'myidentitypoolname'
  MyAuthIdentityPoolRoleMapping:
    Type: 'AWS::Cognito::IdentityPoolRoleAttachment'
    Properties:
      IdentityPoolId: !Ref MyAuthIdentityPool
      Roles:
        authenticated: !GetAtt 'IdentityPoolRole.Arn'

然后，在amplify/backend/api/myapi/parameters.json文件中添加以下内容：

{
  "REST_API_ID": "xxxxxxxxxx"
}

接下来，在amplify/backend/api/myapi/template.yaml中添加以下内容：

Resources: