Yelp API Validation Errors(400) - Android Studio I want to do a simple experiment with the yelp api, but I'm stuck at startup and keep getting validation error. I checked and refreshed the API_key and BaseURL etc but the error persisted. MainActivity.kt private const val TAG = "MainActivity" private const val BASE_URL = "https://api.yelp.com/v3/" private const val API_KEY = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) {...