/mdn2/en-US/docs/Web/HTTP/CORS/Errors
CORSAllowOriginNotMatchingOrigin CORSDidNotSucceed CORSDisabled CORSExternalRedirectNotAllowed CORSInvalidAllowHeader CORSInvalidAllowMethod CORSMethodNotFound CORSMIssingAllowCredentials CORSMissingAllowHeaderFromPreflight CORSMissingAllowOrigin CORSMultipleAllowOriginNotAllowed CORSNotSupportingCredentials CORSOriginHeaderNotAdded CORSPreflightDidNotSucceed CORSRequestNotHttp