Amazon cloudformation cloudformation错误-属性子网的值必须是字符串列表的类型

当我运行create stack时，创建elasticsearch域失败，出现以下错误-“属性子网的值必须是字符串列表类型” 以下是CF模板的片段

Parameters:
  SubnetIds:
    Type: 'List<AWS::EC2::Subnet::Id>'
    Description: Select a VPC subnet to place the instance. Select Multiple Subnets for multi-AZ deployments

Resources:
  ElasticsearchDomain:
    Type: 'AWS::Elasticsearch::Domain'
    Properties:
      AccessPolicies:
        Version: '2012-10-17'
        Statement:
        - Effect: Allow
          Principal:
            AWS: '*'
          Action:
          - 'es:ESHttp*'
          Resource: !Sub 'arn:aws:es:${AWS::Region}:${AWS::AccountId}:domain/${DomainName}/*'
      DomainName: !Ref 'DomainName'
      EBSOptions:
        EBSEnabled: !Ref EBSEnabled
        VolumeSize: !Ref EBSVolumeSize
        VolumeType: gp2
      ElasticsearchClusterConfig:
        DedicatedMasterCount: !If [HasDedicatedMasterNodes, !Ref DedicatedMasterCount, !Ref 'AWS::NoValue']
        DedicatedMasterEnabled: !If [HasDedicatedMasterNodes, true, false]
        DedicatedMasterType: !If [HasDedicatedMasterNodes, !Ref DedicatedMasterType, !Ref 'AWS::NoValue']
        InstanceCount: !Ref ClusterInstanceCount
        InstanceType: !Ref ClusterInstanceType
        ZoneAwarenessEnabled: !If [HasSingleClusterInstance, false, true]
      ElasticsearchVersion: !Ref ElasticsearchVersion
      EncryptionAtRestOptions: !If [HasKmsKey, {Enabled: true, KmsKeyId: !Ref KMSEncryptionKey}, !Ref 'AWS::NoValue']
      SnapshotOptions:
        AutomatedSnapshotStartHour: 0
      VPCOptions:
        SecurityGroupIds:
        - !Ref SecurityGroup
        SubnetIds:
        - !Ref SubnetIds

---

请尝试使用以下代码段：

  VPCOptions:
    SubnetIds: !Ref ESSubnetsID
    SecurityGroupIds: !Ref ESSecurityGroup

并使用以下内容更新参数部分：

  ESSubnetsID:
    Description: Choose which subnets the Elasticsearch cluster should use
    Type: 'List<AWS::EC2::Subnet::Id>'
    Default: 'subnet-1,subnet-2'
  ESSecurityGroup:
    Description: Select the SecurityGroup to use for the Elasticsearch cluster
    Type: 'List<AWS::EC2::SecurityGroup::Id>'
    Default: 'sg-1,sg-2'

ESSubnetsID:
描述：选择Elasticsearch群集应使用的子网
键入：“列表”
默认值：“子网1，子网2”
ESSecurityGroup：
描述：选择用于Elasticsearch群集的SecurityGroup
键入：“列表”
默认值：“sg-1，sg-2”

---

确保传递子网ID的列表。

如错误消息所述，子网应该是字符串列表，而不是参数部分中定义的

列表。将它正确地重新定义为
列表
，它就会工作

Parameters:
  SubnetIds:
    Type: 'List<String>'

参数：
子网：
键入：“列表”
一般来说，您是对的，子网ID必须是字符串列表。但是，您仍然可以使用
列表
Parameters:
  SubnetIds:
    Type: 'List<String>'