AWS Lambda listen kafka message

I am trying to use Lambda as a Kafka consumer, to be triggered once receive a new Kafka message. I got a .yaml template

AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Description: >
  my-service
  Sample SAM Template for my-service
Globals:
  Function:
    Timeout: 3
  Api:
    Cors:
      AllowMethods: "'POST, GET, PUT'"
      AllowHeaders: "'*'"
      AllowOrigin: "'*'"
      AllowCredentials: false

Resources:
  ProcessMSKfunction:
    Type: AWS::Serverless::Function 
    Properties:
      CodeUri: .
      Handler: index.handler
      Runtime: nodejs12.x
      MemorySize: 312
      Timeout: 5000
      
      Events:
  MSKEvent:
    Type: MSK
    Properties:
      StartingPosition: LATEST
      Stream: [...]
      Topics:
        - MyTopic
  Policies:
  - AWSLambdaMSKExecutionRole: {}

and this Lambda is executing one sample handler

let response;

exports.handler = async (event) => {
  // Iterate through keys
  for (let key in event.records) {
    console.log('Key: ', key);
    // Iterate through records
    event.records[key].map((record) => {
      console.log('Record: ', record);
      // Decode base64
      const msg = Buffer.from(record.value, 'base64').toString();
      console.log('Message:', msg);
    });
  }
};

but when I try to build, executing the sam build, it is getting error:

"File "C:... ...site-packages\samtranslator\sdk\resource.py", line 24, in init self.type = resource_dict.get("Type") AttributeError: 'list' object has no attribute 'get'"

Does anyone has a fix alternative for this kind of error?