API Gateway sage maker end point

I want to create API Gateway for Sagemaker end point using serverless.yam. Its failing .

An error occurred: ApiGatewayMethod - Role ARN must be specified for AWS integrations (Service: AmazonApiGateway; Status Code: 400; Error Code: BadRequestException; Request ID: cb987b30-1ea1-4877-b6b9-e2817d7462b3; Proxy: null).

looks like my template is wrong...could any one help me with api gateway example

serverless.yaml

> ApiGatewayRestApi:

  Type: AWS::ApiGateway::RestApi
  Properties:
    ApiKeySourceType: HEADER
    Description: An API Gateway with a sagemaker Integration
    EndpointConfiguration:
      Types:
        - EDGE
    Name: Rsage-api

ApiGatewayResource:
  Type: AWS::ApiGateway::Resource
  Properties:
    ParentId: !GetAtt ApiGatewayRestApi.RootResourceId
    PathPart: 'sagemaker'
    RestApiId: !Ref ApiGatewayRestApi

ApiGatewayMethod:
  Type: AWS::ApiGateway::Method
  Properties:
    ApiKeyRequired: false
    AuthorizationType: NONE
    HttpMethod: POST
    Integration:
      ConnectionType: INTERNET
      #Credentials: !GetAtt ApiGatewayIamRole.Arn
      IntegrationHttpMethod: POST
      PassthroughBehavior: WHEN_NO_MATCH
      TimeoutInMillis: 29000
      Type: AWS
      Uri: !Sub "arn:aws:apigateway:${self:provider.region}:runtime.sagemaker:path/endpoints/xgboost-2022-03-08-08-31-11-865/invocations"
    OperationName: 'lambda'
    ResourceId: !Ref ApiGatewayResource
    RestApiId: !Ref ApiGatewayRestApi

ApiGatewayModel:
  Type: AWS::ApiGateway::Model
  Properties:
    ContentType: 'application/json'
    RestApiId: !Ref ApiGatewayRestApi
    Schema: { }

ApiGatewayStage:
  Type: AWS::ApiGateway::Stage
  Properties:
    DeploymentId: !Ref ApiGatewayDeployment
    Description: Lambda API Stage v0
    RestApiId: !Ref ApiGatewayRestApi
    StageName: 'v0'

ApiGatewayDeployment:
  Type: AWS::ApiGateway::Deployment
  DependsOn: ApiGatewayMethod
  Properties:
    Description: RSage API Deployment

Start with serverless.yaml, especially the ApiGatewayMethod integration and its commented Credentials setting, then trace the referenced ApiGatewayRestApi, ApiGatewayResource, and deployment resources. Compare the configuration with the reported API Gateway error and SageMaker endpoint requirements; done means the example deploys successfully and invokes the endpoint.