Call to firebase database - swift

Question

I'm attempting to make a call to the real time database that I have constructed in firebase. I have utilized the three different methods stated in the documentation, however, I still get an unacceptable access code.
Below are the current code and method that I am using.
let apiToContact = "https://gameofchats-c29ab.firebaseio.com/users.json?auth=AIzaSyBK3J4tzVQNJlhqqmYPRWXlJqnzFB1Hj4k"
let request = Alamofire.request(apiToContact, method: .get, parameters: nil, encoding: URLEncoding.queryString, headers: nil)
request.validate().responseJSON(){ response in
switch response.result {
case .success:
if let value = response.result.value {
let json = JSON(value)
let allEventData = json["events"].arrayValue
// Do what you need to with JSON here!
// print(json)
// print("\n\nlook here\n\n")
// print(allRestaurantData)
// The rest is all boiler plate code you'll use for API requests
print("\n\nlook here\n\n")
print(allEventData)
// var firstRestaurant = allRestaurantData[0]
//print(firstRestaurant)
// will populate all Restaurants Array with restaurant objects
/*
for restaurantStruct in allRestaurantData {
self.allRestaurants.append(Restaurants(json: restaurantStruct))
}
for restaurantsName in self.allRestaurants{
print(restaurantsName.restaurantApiKey)
print("\n")
}
*/
// will take the imageUrl array and populate it with the logoURL of the restaurants for later user
/* for images in self.allRestaurants{
self.imageUrl.append(images.logoUrl)
print(images.logoUrl)
print("\n")
}
*/
}
case .failure(let error):
print(error)
}