Django error during template rendering. Reverse for 'name' with arguments '(",)' and keyword arguments '{}' not found
<p>I am working with my first Django project, and I now I have some mistakes I don't understand at all! Yesterday I created 2 forms: one of them was working, and the data from the second one was not saved to the database. I was trying to fix this problem, but now both of them are not working, and I even have the same problem with one of my old templates. Could you please tell me what my mistakes are and how I can fix them?</p>

<p>This is the part of my views.py:</p>

<pre><code>def listing(request):
    users_list = Person.objects.all()
    paginator = Paginator(users_list, 14) 
    page = request.GET.get('page')
    try:
        users = paginator.page(page)
    except PageNotAnInteger:
        users = paginator.page(1)
    except EmptyPage:
        users = paginator.page(paginator.num_pages)
    return render(request, 'friends_plans/list.html', {"users": users})

def add_wish_list(request):
    if request.method == 'POST':
        form = Wish_listForm(request.POST)
        if form.is_valid():
            newform = form.save(commit=False)
            newform.person = request.user
            newform.save()
        else:
            print form.errors
    else:
        form = Wish_listForm()
    return render(request, 'friends_plans/add_wish_list.html', {'form': form})

def add_comment(request, wish_list_id):
    person = request.user
    wish_list = get_object_or_404(Wish_list, pk=wish_list_id)
    if request.method == 'POST':
        form = Comment_to_wish_listForm(request.POST)
        if form.is_valid():
            newform=form.save(commit=False)
            newform.person = request.user
            newform.comment_to = wish_list
            wish_list.person = person
            newform.save()
        else:
            print form.errors
    else:
        form = Comment_to_wish_listForm()
    context_dict = {'form': form, 'wish_list': wish_list}
    return render(request, 'friends_plans/add_comment.html', {'context_dict':  context_dict})
</code></pre>

<p>This is my urls.py:</p>

<pre><code>app_name = 'friends_plans'
urlpatterns = [
url(r'^$', views.index, name='index'), # start page
url(r'^users/$', views.listing, name='listing'),
url(r'^(?P&lt;person_id&gt;[0-9]+)/wish_list/$', views.wish_list,    name='wish_list'),
url(r'^(?P&lt;person_id&gt;[0-9]+)/$', views.user, name='user'),
url(r'^(?P&lt;person_id&gt;[0-9]+)/(?P&lt;day_id&gt;[0-9]+)/$', views.day, name='day'),
url(r'^add_wish_list/$', views.add_wish_list, name='add_wish_list'),
url(r'^(?P&lt;wish_list_id&gt;[0-9]+)/comment/$', views.comment, name='comment'),
url(r'^(?P&lt;wish_list_id&gt;[0-9]+)/comment/add/$', views.add_comment,   name='add_comment'),
]
</code></pre>

<p>This is list.html:</p>

<pre><code>{% extends 'friends_plans/base.html' %}
{% load staticfiles %}
    {% block title %} Users {% endblock %}
    {% block content %}
        &lt;div id ="left"&gt;
            &lt;div id="toptitle"&gt; Friends' Plans members:&lt;/div&gt;
            &lt;table class="table"&gt;
                    &lt;thead&gt;
                      &lt;tr&gt;
                        &lt;th&gt;Photo&lt;/th&gt;
                        &lt;th&gt;Name&lt;/th&gt;
                        &lt;th&gt;Occupation&lt;/th&gt;
                        &lt;th&gt;Days&lt;/th&gt;
                        &lt;th&gt;Places&lt;/th&gt;
                      &lt;/tr&gt;
                    &lt;/thead&gt;
                    &lt;tbody&gt;
                    {% for person in users %}
                      &lt;tr&gt;
                        &lt;td&gt;&lt;span&gt; &lt;img class="small_cat" src={% static  'images/cat3.jpg' %} /&gt; &lt;/span&gt;&lt;/td&gt;
                        &lt;td&gt;&lt;a href="{% url 'friends_plans:user' user.pk  %}"&gt;{{ person.username|upper }}&lt;/a&gt;&lt;/span&gt;&lt;/td&gt;
                        &lt;td&gt;&lt;span&gt;Student at {{   person.place_of_work_or_study}}&lt;/span&gt;&lt;/td&gt;
                        &lt;td&gt;{{person.day_set.all.count}}&lt;/td&gt;
                        &lt;td&gt;{{person.wish_list_set.all.count}}&lt;/td&gt;
                      &lt;/tr&gt;
                    {% endfor %}
                    &lt;/tbody&gt;
                  &lt;/table&gt;
            &lt;div class="pagination"&gt;
                &lt;div id="listing"&gt;
                    &lt;span class="step-links"&gt;
                        {% if users.has_previous %}
                            &lt;a href="?page={{ users.previous_page_number  }}"&gt;previous&lt;/a&gt;
                        {% endif %}

                        &lt;span class="current"&gt;
                            Page {{ users.number }} of {{  users.paginator.num_pages }}.
                        &lt;/span&gt;

                        {% if users.has_next %}
                            &lt;a href="?page={{ users.next_page_number  }}"&gt;next&lt;/a&gt;
                        {% endif %}
                    &lt;/span&gt;
                &lt;/div&gt;
            &lt;/div&gt;
        &lt;/div&gt;
    {% endblock %}
</code></pre>

<p>This is add_wish_list.html:</p>

<pre><code>{% extends 'friends_plans/base.html' %}
{% load staticfiles %}
{% block content %}
&lt;h1&gt;Add a wish_list&lt;/h1&gt;
&lt;form method="post"  action="/friends_plans:add_wish_list/"&gt;
    {% csrf_token %}
    {{form.as_p}}
    &lt;input type="submit" value="Add wish_list" /&gt;
&lt;/form&gt;
{% endblock %}
</code></pre>

<p>This is add_comment.html:</p>

<pre><code>{% extends 'friends_plans/base.html' %}
{% block content %}

&lt;h1&gt;Add a wish_list&lt;/h1&gt;
&lt;form method="post"  action=""&gt;
    {% csrf_token %}
    {{form.as_p}}
    &lt;input type="submit" value="Add comment" /&gt;
&lt;/form&gt;
{% endblock %}
</code></pre>

<p>I understand that the problem connected with urls, but I don't understand what it is, and why everything was fine with list.html before as I did't change it!</p>