We're running Docker on Windows 10. We have a simple java springboot application, which should interact with aws kinesis and s3. For local testing, we want to pull the localstack docker latest image and install and run. But the startup for Kinesis throws error whereas S3 works fine. Below are the details:

```
docker compose:
version: '3.1'
services:
  localstack:
    image: "localstack/localstack"
    container_name: localstack_demo
    environment:
      SERVICES: kinesis, s3, sqs
      DEBUG: 1
      DATA_DIR: /tmp/localstack
      KINESIS_STREAM_SHARDS: 1
      KINESIS_ERROR_PROBABILITY: 0.0
      KINESIS_STREAM_NAME: my-stream
    ports:
      - "4567-4584:4567-4584"
      - "8055:8080"
    volumes:
      - './.localstack:/tmp/localstack'
      - '/var/run/docker.sock:/var/run/docker.sock'
```

When we try to hit the default url fot Kinesis, http://localhost:4568, we get the following error: (please note that default url for S3 responds as expected):

```
localstack_demo | 2019-09-24T22:35:27:ERROR:localstack.services.generic_proxy: Error forwarding request: the JSON object must be str, bytes or bytearray, not 'NoneType' Traceback (most recent call last):
localstack_demo |   File "/opt/code/localstack/localstack/services/generic_proxy.py", line 240, in forward
localstack_demo |     path=path, data=data, headers=forward_headers)
localstack_demo |   File "/opt/code/localstack/localstack/services/kinesis/kinesis_listener.py", line 22, in forward_request
localstack_demo |     data = json.loads(to_str(data))
localstack_demo |   File "/usr/lib/python3.6/json/__init__.py", line 348, in loads
localstack_demo |     'not {!r}'.format(s.__class__.__name__))
localstack_demo | TypeError: the JSON object must be str, bytes or bytearray, not 'NoneType'
```
environment['DOCKER_LAMBDA_USE_STDIN'] = '1'
        return event_body.encode()
    def prepare_execution(self, func_arn, env_vars, runtime, command, handler, lambda_cwd):
        entrypoint = ''
        if command:
            entrypoint = ' --entrypoint ""'
        else:
            command = '"%s"' % handler
        env_vars_string = ' '.join(['-e {}="${}"'.format(k, k) for (k, v) in env_vars.items()])
        debug_docker_java_port = '-p {p}:{p}'.format(p=Util.debug_java_port) if Util.debug_java_port else ''
        network = config.LAMBDA_DOCKER_NETWORK
        network_str = '--network="%s"' % network if network else ''
        docker_cmd = self._docker_cmd()
        docker_image = Util.docker_image_for_runtime(runtime)
        if config.LAMBDA_REMOTE_DOCKER:
            cmd = (
                'CONTAINER_ID="$(%s create -i'
                ' %s'
                ' %s'
                ' %s'
                ' %s'  
                ' --rm'