Assertion Failed: `adaptererror` Expects Json-api Formatted Errors Array

After reading Handling Errors with Ember Data and numerous other tips and tricks on how to solve error handling in Ember JS, I still am not able to figure out what is wrong with my

Solution 1:

Figured it out. Is was simply that I didn't return an errors array. The correct error respons was:

{
    "errors": [{
        "source": {
            "pointer": "user\/firstName"
        },
        "detail": "user.first_name.not_blank"
    }, {
        "source": {
            "pointer": "user\/surName"
        },
        "detail": "user.sur_name.not_blank"
    }, {
        "source": {
            "pointer": "user\/email"
        },
        "detail": "user.email.not_blank"
    }]
}