With the following serverless.yml file:
```yml
service: localtest

provider:
  name: aws
  runtime: nodejs10.x

functions:
  hello:
    handler: handler.hello
    events:
    - stream:
        type: dynamodb
        arn:
          Fn::GetAtt: [fooTable, StreamArn]

resources:
  Resources:
    fooTable:
      Type: AWS::DynamoDB::Table
      Properties:
        TableName: fooTable
        AttributeDefinitions:
          - AttributeName: foo
            AttributeType: S
        KeySchema:
          - AttributeName: foo
            KeyType: HASH
        ProvisionedThroughput:
          ReadCapacityUnits: 1
          WriteCapacityUnits: 1
        StreamSpecification:
          StreamViewType: NEW_AND_OLD_IMAGES

plugins:
- "serverless-localstack"

custom:
  localstack:
    stages:
      - "local"
```
It fails with a generic error (500) on the deployment end and with `:ERROR:localstack.services.cloudformation.cloudformation_starter: Unable to parse and create resource "HelloEventSourceMappingDynamodbFooTable": 'NoneType' object has no attribute 'function_arn'` on the localstack end.
It deploys fine to AWS.
res_type = resource.get('Type', '')
    parts = res_type.split('::')
    if len(parts) == 1:
        return None
    if res_type.endswith('Cognito::UserPool'):
        return 'cognito-idp'
    if parts[-2] == 'Cognito':
        
        return 'cognito-idp'
    return parts[1].lower()
def get_resource_name(resource):
    res_type = get_resource_type(resource)
    properties = resource.get('Properties') or {}
    name = properties.get('Name')
    if name:
        return name
    
    if res_type == 'S3::Bucket':
        name = properties.get('BucketName')
    elif res_type == 'SQS::Queue':
        name = properties.get('QueueName')
    elif res_type == 'Cognito::UserPool':
        name = properties.get('PoolName')
    else:
        LOG.warning('Unable to extract name for resource type "%s"' % res_type)
    return name
def get_client(resource):