stubby seems to fail without error messages

[cicely-f]

I just tried using stubby both in Windows 10 Pro and Ubuntu. When I start it up, there is no message, it just returns me to the command line without any error either. When attempting to connect to either 8889 or 8882 on localhost, I get connection refused.

I launch stubby with the following command:
stubby -d api-stubs.yml -l localhost -w

This is my api-stubs.yml file:

# valid login
- request:
    url: ^/login/?$
    method: GET
    query:
      email: someone@example.com
      password: dadada
  response:
   -  status: 200
      headers: application/json
      body: >
        {
          "id":"fedcba-123456-abcdef",
          "email":"someone@example.com"
        }
# invalid login
- request:
    url: ^/login/?$
    method: GET
    query:
      email: someone@example.com
      password: "(!dadada)"
  response:
   - status: 401

# logout
- request:
    url: ^/logout/?$
    method: GET
  response:
   -  status: 200