Swift AppIntent Parameters. How to trap errors?

Question

I have a very simple AppIntent but Siri is easily confused when capturing parameters and responds with "Something went wrong" then silently terminates the process - how do I see the error and ask the user to try again?

The error happens before the Perform method and only when running on a handset.

import AppIntents
import SwiftUI

enum MyValues: String {
    
    case no
    case alittle
    case alot
    
}

extension MyValues: AppEnum {
    
    static var typeDisplayRepresentation: TypeDisplayRepresentation = "Choose values"
    static var caseDisplayRepresentations: [MyValues: DisplayRepresentation] = [
        .no: "No",
        .alittle: "A little",
        .alot: "A lot"
    ]
    
    static var scoreFromValue: [MyValues: Int] = [
        .no: 1,
        .alittle: 3,
        .alot: 5
    ]
    
}


struct MyIntent: AppIntent {
    
    static private func score(values: [Int]) -> String {
        let result = values.reduce(1, *)
        return String(result)
    }
    
    
    static let title: LocalizedStringResource = "Values Questionnaire"
    
    @Parameter(title: "value1", requestValueDialog:("Question 1?") )
    var valueOne: MyValues
    
    @Parameter(title: "value2", requestValueDialog:("Question 2?"))
    var valueTwo: MyValues
    
    @Parameter(title: "value3", requestValueDialog:("Question 3?"))
    var valueThree: MyValues
    
    @Parameter(title: "value4", requestValueDialog: ("Question 4?"))
    var valueFour: MyValues
    
    @MainActor
    func perform() async throws -> some IntentResult{
        
        return .result(dialog: """
            I got \(valueOne.rawValue), \(valueTwo.rawValue), \(valueThree.rawValue) and  \(valueFour.rawValue) which is a score of \(MyIntent.score(values: [MyValues.scoreFromValue[valueOne] ?? 0, MyValues.scoreFromValue[valueTwo] ?? 0, MyValues.scoreFromValue[valueThree] ?? 0, MyValues.scoreFromValue[valueFour] ?? 0]))
            """)
    }
}