Tyk crash while creating a new key via gw API

While creating a token i did not refer to a policy. In my policy directory i have one default policy loaded:

{
        "default": {
                "rate": 1000,
                "per": 1,
                "quota_max": 100,
                "quota_renewal_rate": 60,
                "access_rights": {
                        "41433797848f41a558c1573d3e55a410": {
                                "api_name": "My API",
                                "api_id": "41433797848f41a558c1573d3e55a410",
                                "versions": [
                                        "Default"
                                ]
                        }
                },
                "org_id": "54de205930c55e15bd000001",
                "hmac_enabled": false
        }
}

In order to create a first token i used this exact example:


curl -H "x-tyk-authorization: 352d20ee67be67f6340b4c0605b044b7"\
 -s\
 -H "Content-Type: application/json"\
 -X POST\
 -d '{
    "name": "Test API",
    "slug": "test-api",
    "api_id": "1",
    "org_id": "53ac07777cbb8c2d53000002",
    "auth": {
        "auth_header_name": "Authorization"
    },
    "definition": {
        "location": "header",
        "key": "x-api-version"
    },
    "version_data": {
        "not_versioned": true,
        "versions": {
            "Default": {
                "name": "Default",
                "use_extended_paths": true
            }
        }
    },
    "proxy": {
        "listen_path": "/my-api/",
        "target_url": "http://httpbin.org/",
        "strip_listen_path": true
    },
    "active": true,
    "domain": ""
 }'\
 http://{my_server}:8080/tyk/apis/ | python -mjson.tool