NoReverseMatch at / Reverse for 'cart' with keyword arguments '{'pk': ''}' not found. 1 pattern(s) tried: ['cart/(?P<id>[0-9]+)/\\Z']

Using Django Mystery Errors
8 

{% extends 'django_experiments_app/base.html' %}
	{% block content %}

<div class="container ">
  <div class="row row-cols-2">

		<ul class="">

				<li><a href="{% url 'fatyatya:front_page' %}">Fatyatya</a></li>
				<li><a href="{% url 'books:front_page' %}">Books</a></li>
				<li><a href="{% url 'blog:posts' %}">Blog</a></li>
				<li><a href="{% url 'product_catalog:front_page' %}">Products catalog</a></li>
				<li><a href="{% url 'testing_app:front_page' %}">Testing app</a></li>
				<li><a href="{% url 'ds_mp:front_page' %}">dropship marketplace</a></li>
				<li><a href="{% url 'newsy_app:front_page' %}">newsy app</a></li>

				<li><a href="{% url 'tutorials:front_page' %}">tutorials</a></li>
				
				<li><a href="{% url 'codepedia:front_page' %}">codepedia</a></li>
				<li><a href="{% url 'anonymous:front_page' %}">anonymous</a></li>
				<li><a href="{% url 'ltt:front_page' %}">ltt</a></li>
				
				<li><a href="{% url 'social_share_testing:front_page' %}">social share testing</a></li>
				
				<li><a href="{% url 'ecommerce:front_page' %}">e-commerce</a></li>

				<li><a href="{% url 'django_experiments_app:keywords' %}">keywords</a></li>

				<li><a href="{% url 'tidynotes:front_page' %}">Tidy notes</a></li>



				<li><a href="{% url 'cart:cart' cart.id %}">cart</a></li>


		</ul>


		<hr>


		<h3>Cropperjs - Testing:</h3>
		<style>

		<br><br><br><br><br><br>

		<div>



  	<img id="image" src="">


  	<img id="output" src="">



</div>

</div>
</div>


	{% endblock %}
{% include 'django_experiments_app/footer.html' %}