JSONPath Existence Path error - InvalidPatchException

if i changed the JSON response to:

{
    "parent": [
        {
            "country": "RO",
            "statusCode": "NotFound"
        },
        {
            "country": "UK",
            "statusCode": "Found",
            "foundEntity": [ {
                "respondingArea": "Authority",
                "entityDetails": {
                    "NameDetails": {
                        "familyName": "Smith",
                        "firstName": "John"
                    },
                "respondingArea": "Authority2",
                "entityDetails": {
                    "NameDetails": {
                        "familyName": "Daniels",
                        "firstName": "Mike"
                    }
                }
            } }
        ]
        }
    ]
}

i tried the following Script Assertion but no joy iterating through the fields to find the FamilyName based on it being within the "UK/Found" parent. comes back with null continuously 😞

import com.eviware.soapui.support.JsonPathFacade
def found = 0
def jpf = new JsonPathFacade(messageExchange.responseContent)
def testArray = jpf.readObjectValue("parent")
log.info (testArray)

testArray.each {
def country= it.get("country")
def statusCode = it.get("statusCode")
def familyName = it.get("foundEntity.entityDetails.NameDetails.familyName)
log.info ("country: " +country)
log.info ("FamilyName: " +familyName)

if(country.contains("UK") && statusCode.contains("Found") && familyName.contains("Smith")) {
log.info("matching record: $country")
found++
}
} 
assert found > 0: "*****Assertion of data combination. did not find***"

o the child elements.