spectral: Spectral OAS2 validation throws a non-existent error without path value

Running spectral OAS2 rules and functions sets on a OAS2 .yaml file on all tests (2 different yaml files) results in a cryptic error without a "path" parameter:

{
    "name": "oas2-schema",
    "summary": "Validate structure of OpenAPIv2 specification.",
    "message": "should NOT have additional properties: 0",
    "path": [],
    "severity": 50,
    "severityLabel": "error"
}

Those files don’t throw any errors in any other validation tool (swagger editor, apiary, etc.). I am happy to provide them if needed.

I’m submitting a…

• bug report
• feature request

What is the current behavior?

Running:

spectral.addFunctions(oas2Functions());
spectral.addRules(oas2Rules());
const results = spectral.run(myOAS);

on a OAS2 .yaml file

What is the expected behavior?

Do not throw this error or be more specific on it’s origin and place in the file.

What is the motivation / use case for changing the behavior?

User experience and compliance with OAS2 specification

Please tell us about your environment:

• Version: @stoplight/spectral@1.2.0
• Framework: [ ]
• Language: [all]

Other information

It also throws

oasOpParams expects a resolved object, but none was provided. Results may not be correct.
oasPathParam expects a resolved object, but none was provided. Results may not be correct.

which does not say anything of value without more explanation.