Plugin.FirebaseAuth.FirebaseAuthException: An error occurred when accessing the keychain #30

[ourweb4]

I am getting this error when i create a new user. however the user is created, I don not know how to fix this issue. the following is my code.
var result = await CrossFirebaseAuth.Current.Instance.CreateUserWithEmailAndPasswordAsync(em, pw);
var uid = result.User.Uid;
if (uid != null)
{
User user = new User();
var app = Application.Current as App;
app.ukey = uid;
user.Uid = uid;
user.address = txtaddress.Text;
user.city = txtcity.Text;
user.email = em;
user.first = txtfirstname.Text;
user.phone = txtphone.Text;
user.state = txtstate.Text;
user.zip = txtzip.Text;
user.last = txtlastname.Text;
await CrossCloudFirestore.Current
.Instance
.Collection("users")

                         .AddAsync<User>(user);

                    await Navigation.PushModalAsync(new ToolPage());
                }
                else
                {

                    await DisplayAlert("Error", "User cant be created ", "OK");
                }
                }
    catch (Exception ex)
          
            {
                await DisplayAlert("Error", ex.Message, "OK");

            }
        }
        else
        {
           await  DisplayAlert("Error", "Email/password cant be blank", "OK");
        }

[rezamohamed]

Make sure you have a provisioning profile created on your apple developer account, and its on xcode in your local machine. Then, in Entitlements, enable keychain access. in iOS Bundle Signing, in custom entitlements, add this Entitlements.plist file.

[UNARDanielPratt]

Visual Studio only adds the entitlements.plist to the iPhone platform, you also need to add it to the iPhoneSimulator platform in iOS Bundle Signing if you want to test it on the simulator instead of a physical device.