Sometimes, attempting to run lambdas will return this type of error:
```
{"Type": "Server", "message": "Error executing Lambda function arn:aws:lambda:ap-northeast-1:000000000000:function:service-stage-functionName: An error occurred (ResourceAlreadyExistsException) when calling the CreateLogGroup operation: The specified log group already exists Traceback (most recent call last):\n 
File \"/opt/code/localstack/localstack/services/awslambda/lambda_api.py\", line 338, in run_lambda\n 
event, context=context, version=version, asynchronous=asynchronous)\n 
File \"/opt/code/localstack/localstack/services/awslambda/lambda_executors.py\", line 81, in execute\n 
return do_execute()\n File \"/opt/code/localstack/localstack/services/awslambda/lambda_executors.py\", line 70, in do_execute\n self._store_logs(func_details, log_output, invocation_time)\n 
File \"/opt/code/localstack/localstack/services/awslambda/lambda_executors.py\", line 105, in _store_logs\n logs_client.create_log_group(logGroupName=log_group_name)\n 
File \"/opt/code/localstack/.venv/lib/python3.6/site-packages/botocore/client.py\", line 357, in _api_call\n 
return self._make_api_call(operation_name, kwargs)\n 
File \"/opt/code/localstack/.venv/lib/python3.6/site-packages/botocore/client.py\", line 661, in _make_api_call\n 
raise error_class(parsed_response, operation_name)\n
botocore.errorfactory.ResourceAlreadyExistsException: An error occurred (ResourceAlreadyExistsException) when calling the CreateLogGroup operation: The specified log group already exists\n", "__type": "InternalFailure"}
```
I am not yet sure if there are any particular settings that cause it, since it does not occur for certain deployments.

Will update if I can figure out the exact configuration.
LOG.debug('Extract resource attribute: %s %s' % (resource_type, attribute))
    
    if resource_type == 'Lambda::Function':
        actual_attribute = 'FunctionArn' if attribute == 'Arn' else attribute
        return resource['Configuration'][actual_attribute]
    elif resource_type == 'DynamoDB::Table':
        actual_attribute = 'LatestStreamArn' if attribute == 'StreamArn' else attribute
        value = resource['Table'].get(actual_attribute)
        return value
    elif resource_type == 'ApiGateway::RestApi':
        if attribute == 'PhysicalResourceId':
            return resource['id']
        if attribute == 'RootResourceId':
            resources = aws_stack.connect_to_service('apigateway').get_resources(restApiId=resource['id'])['items']
            for res in resources:
                if res['path'] == '/' and not res.get('parentId'):
                    return res['id']
    elif resource_type == 'ApiGateway::Resource':
        if attribute == 'PhysicalResourceId':
            return resource['id']
    return resource.get(attribute)
def resolve_ref(stack_name, ref, resources, attribute):