Error system.refection.targetinvocation when setting binding context in view

See more:

C#

MVVM

Binding

Xamarin

Hi!I have a project in Xamarin.Forms and I am using MVVM.The problem is that when I start the android emulator and the page is initializing,I get an error System.Reflection.TargetInvocation where I set the BindingContext in the view:
RegistrationPage.cs

public partial class RegistrationPage : ContentPage
 {
     public RegistrationPage(RegistrationViewModel vm)
     {

             InitializeComponent();
          this.BindingContext = vm;//here I get the error
     }
 }

When I click the error to see the details,it shows System.NullReferenceException on the values from my ViewModel which I bind in the View saying:"Object reference not set to an instance of an object".I believe that it should be normal for them to be null,but I don't understand why I get this error since the page won't even load,it will just break and show me the error.This is the rest of the code:
RegistrationPage.xaml

<pre><?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:d="http://xamarin.com/schemas/2014/forms/design"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
         xmlns:l="clr-namespace:Edu.VM"
             mc:Ignorable="d"
             x:Class="Edu.Views.RegistrationPage">
    
    <StackLayout HorizontalOptions="FillAndExpand" VerticalOptions="FillAndExpand" Padding="20,0">
      
        <Entry IsPassword="False" x:Name="userName" Placeholder="Name" Text="{Binding Name}" PlaceholderColor="Black" HeightRequest="40"/>
        <Entry IsPassword="False" x:Name="userEmail" Placeholder="Email" Text="{Binding Email}" PlaceholderColor="Black" HeightRequest="40"/>
        <Entry IsPassword="False" x:Name="userPhone" Placeholder="Phone" Text="{Binding Phone }" PlaceholderColor="Black" HeightRequest="40"/>
        <Entry IsPassword="True" x:Name="userPassword" Placeholder="Password" Text="{Binding Password}" PlaceholderColor="Black" HeightRequest="40"/>
        <Entry IsPassword="True" x:Name="userConfPassword" Placeholder="Confirm Password" Text="{Binding ConfPassword}" PlaceholderColor="Black" HeightRequest="40"/>
        <Button x:Name="registerUser" Command="{Binding RegisterCommand}" Text="Register"/>

    </StackLayout>
</ContentPage>

RegistrationViewModel.cs

public class RegistrationViewModel : BaseViewModel
  {
      private Users user;
      RegistrationPage page;

      public RegistrationViewModel()
      {

      }
      public RegistrationViewModel(RegistrationPage page,Users s)
      {
          user = s;
          this.page = page;

      }
  public ICommand RegisterCommand => new Command(async () => await Register());
      public async Task Register()
      {
          bool isUserAccept = await Application.Current.MainPage.DisplayAlert("Add contact", "Do you want to register?", "", "OK");
          if (isUserAccept)
          {
              await App.Data.AddUser(user);
              await page.DisplayAlert("Registration Succesful", "You have been registered" + "" + user.Name, "OK");
          }
          if (user == null)
          {
              await page.DisplayAlert("Registration went wrong", "Please complete all fields", "OK");
          }
      }


         public string Name
      {
          get { return user.Name; }
          set
          {

                  user.Name = value;
              OnPropertyChanged("Name");
          }
      }
      public string Email
      {

          get { return user.Email; }
          set
          {

                  user.Email = value;
              OnPropertyChanged("Email");
          }
      }
      public string Phone
      {
          get { return user.Phone; }
          set
          {
                  user.Phone = value;
              OnPropertyChanged("Phone");
          }
      }
      public string Password
      {
          get { return user.Password; }
          set
          {

                  user.Password = value;
              OnPropertyChanged("Password");
          }
      }
      public string ConfPassword
      {
          get { return user.ConfPassword; }
          set
          {

                  user.ConfPassword = value;
              OnPropertyChanged("ConfPassword");
          }
      }
  }

Did anyone encounter this kind of problem before?Any help would be appreciated.

What I have tried:

I have referenced the model class in the ViewModel and assigned the values of the model to the viewmodel in the constructor:

Name = user.Name;
Email = user.Email;
Password = user.Password;
ConfPassword = user.ConfPassword;
Phone = user.Phone;

I set the binding context directly into the view:

<StackLayout.BindingContext>
<l:RegistrationViewModel>
</StackLayout.BindingContext>

I deleted the TwoWay binding property for the values in the view and I also tried to check for null values in the code behind like this:

if(string.IsNullOrEmpty(name.Text)){
InitializeComponent();
}