How Come My WeatherKit Sample App Doesn't Work?

I have gone through several tutorials for WeatherKit. But my sample app doesn't return weather data. The following is a list of what I have.

1. I've registered a Bundle ID for my sample app with the WeatherKit capability on.
2. I've created a developer profile for my sample app.
3. I've opened my Xcode project to make sure that the WeatherKit capability is enabled.
4. I have run my sample app with an actual device.
5. I have waited for more than 30 minutes for the service to kick in. It's been several days.

The following is my code.

import SwiftUI
import CoreLocation
import WeatherKit

struct ContentView: View {
	@State var currentWeather: CurrentWeather?

	var body: some View {
		NavigationStack {
			List {
				Group {
					SampleCell(title: "Temperature", value: String(currentWeather?.apparentTemperature.value ?? 0.0) + "℃")
					SampleCell(title: "Cloud coverage", value: String(currentWeather?.cloudCover ?? 0.0))
					SampleCell(title: "Weather condition", value: String(currentWeather?.condition.description ?? ""))
					SampleCell(title: "Dew point", value: String(currentWeather?.dewPoint.value ?? 0.0) + "℃")
					SampleCell(title: "Humidity", value: String(currentWeather?.humidity ?? 0.0))
					SampleCell(title: "Pressure", value: String(currentWeather?.pressure.value ?? 0.0) + "mbar")
					SampleCell(title: "Pressure trend", value: String(currentWeather?.pressureTrend.description ?? ""))
					SampleCell(title: "Temperature", value: String(currentWeather?.temperature.value ?? 0.0) + "℃")
					SampleCell(title: "UV index", value: String(currentWeather?.uvIndex.value ?? 0))
					SampleCell(title: "Visibility", value: String(currentWeather?.visibility.value ?? 0.0) + "m")
				}
				SampleCell(title: "Window direction", value: String(currentWeather?.wind.direction.value ?? 0.0) + "°")
				SampleCell(title: "Window speed", value: String(currentWeather?.wind.speed.value ?? 0.0) + "km/h")
				SampleCell(title: "Gust", value: String(currentWeather?.wind.gust?.value ?? 0.0) + "km/h")
			}
			.navigationTitle(Text("CurrentWeather"))
			.task {
				let service = WeatherService()
				let location = CLLocation(
					latitude: 35.467081,
					longitude: 139.620798
				)
				do {
					let weather = try await service.weather(for: location)
					currentWeather = weather.currentWeather
				} catch let error {
					print(error.localizedDescription)
				}
			}
		}
	}
}

struct SampleCell: View {
	var title: String
	var value: String

	var body: some View {
		VStack {
			HStack {
				Text(title)
				Spacer()
				Text(value)
			}
		}
	}
}

Yet, I constantly get the following warnings.

2023-11-29 09:33:46.504737+0900 WeatherCrazyMama[15279:9734572] [WeatherDataService] Aborting silent interpolation: no interpolator object; location=CLLocationCoordinate2D(latitude: 35.467081, longitude: 139.620798) 2023-11-29 09:33:47.900605+0900 WeatherCrazyMama[15279:9734577] [AuthService] Failed to generate jwt token for: com.apple.weatherkit.authservice with error: Error Domain=WeatherDaemon.WDSJWTAuthenticatorServiceListener.Errors Code=2 "(null)" 2023-11-29 09:33:47.989603+0900 WeatherCrazyMama[15279:9734572] [WeatherService] Encountered an error when fetching weather data subset; location=<+35.46708100,+139.62079800> +/- 0.00m (speed -1.00 mps / course -1.00) @ 2023/11/29 9:33:46 AM Japan Standard Time, error=WeatherDaemon.WDSJWTAuthenticatorServiceListener.Errors 2 Error Domain=WeatherDaemon.WDSJWTAuthenticatorServiceListener.Errors Code=2 "(null)" The operation couldn’t be completed. (WeatherDaemon.WDSJWTAuthenticatorServiceListener.Errors error 2.)

What am I doing wrong? Thanks.