Ошибка "CSRF token missing or incorrect" при передаче информации в форме

from django.shortcuts import render, render_to_response, redirect
from tournament.models import Chessplayers, Rating
from django.contrib import auth
from django.contrib.auth.decorators import login_required
from django.core.context_processors import csrf
 
def auth_view(request):
    username = request.POST['username']
    password = request.POST['password']
    user = auth.authenticate(username=username,password=password)
    if user is not None:
        if user.is_active:
            auth.login(request, user)
            return redirect('/loggedin')
        else:
            return redirect('/disabled_account')
    else:
        return redirect('/invalid')

{% block header %}
    {% if forms.errors %}
    <p class="error">Sorry, that's not a valid username or password</p>
    {% endif %}
 
    <form action="/auth/" method="post">
        {% csrf_token %}
        <label for="username">User name:</label>
        <input type="text" name="username" id="username" value="">
        <label for="password">Password:</label>
        <input type="password" name="password" id="password" value="">
        <input type="submit" value="login">
    </form>
 
{% endblock%}

{% block header %}
 
<h2>Hi, {{ full_name }} you are now logged in!</h2>
    <p>Adding player to tournament table.</p>
    <form action="/addplayer_enter/" method="post">
        <label for="name">First name player:</label>
        <input type="text" name="name" id="name" value="">
        <label for="soname">Last name player:</label>
        <input type="text" name="soname" id="soname" value="">
        <label for="age">Age player:</label>
        <input type="text" name="age" id="age" value="">
        <input type="submit" value="Add player">
    </form>
<p>Click <a href="/logout/">here</a> to logout.</p>
{% endblock %}

@login_required
def addplayerr(request):   
    if request.POST and form.is_valid():
        new_player = Players.objects.create(
            name=request.POST['name'], 
            soname=request.POST['soname'])
        Age.objects.create(age=request.POST['age'], age_player_id=new_player_id)     
        return redirect('/loggedin')
    else:
        return redirect('/')