Serverless部署报错：IamRoleLambdaExecution创建失败，求解决

我是AWS服务与Serverless应用开发新手，执行sls deploy命令时出现CREATE_FAILED: IamRoleLambdaExecution (AWS::IAM::Role)错误，我的serverless.yml配置如下：

provider:
  name: aws
  runtime: nodejs12.x
  memorySize: 256
  stage: ${opt:stage, 'dev'}
  region: eu-west-1
  iamRoleStatements:
    - Effect: Allow
      Action:
        - dynamodb.PutItem
      Resource: 
        - arn:aws:dynamodb:#{AWS::Region}:#{AWS::AccountId}:table/AuctionsTable  

问题出在IAM角色资源ARN里的变量语法错误：

• Serverless框架中引用AWS区域和账号ID的正确变量是${aws:region}和${aws:accountId}，而不是CloudFormation原生的#{AWS::Region}和#{AWS::AccountId}语法。

修改后的serverless.yml配置：

provider:
  name: aws
  runtime: nodejs12.x
  memorySize: 256
  stage: ${opt:stage, 'dev'}
  region: eu-west-1
  iamRoleStatements:
    - Effect: Allow
      Action:
        - dynamodb.PutItem
      Resource: 
        - arn:aws:dynamodb:${aws:region}:${aws:accountId}:table/AuctionsTable  

修改完成后，重新执行sls deploy命令即可完成部署。

内容的提问来源于stack exchange，提问作者sami_neranjan