Django Tutorial Issues

Hi i am new to Django and in the process of going through the django tutorial at https://www.djangoproject.com/ 

I have however run into problems on Part 4. I have added the following code to the detail.html page 

<h1>{{ question.question_text }}</h1>

{% if error_message %}<p><strong>{{ error_message }}</strong></p>{% endif %}

<form action="{% url 'polls:vote' question.id %}" method="post">

{% csrf_token %}

{% for choice in question.choice_set.all %}

    <input type="radio" name="choice" id="choice{{ forloop.counter }}" value="{{ choice.id }}" />

    <label for="choice{{ forloop.counter }}">{{ choice.choice_text }}</label><br />

{% endfor %}

<input type="submit" value="Vote" />

</form>

But when i click on the links on the polls home page i get the following error

NoReverseMatch at /polls/3/

Reverse for 'vote' with arguments '('',)' not found. 1 pattern(s) tried: ['polls/(?P<question_id>[0-9]+)/vote/$']

Request Method:	GET
Request URL:	http://127.0.0.1:8000/polls/3/
Django Version:	1.11
Exception Type:	NoReverseMatch
Exception Value:	Reverse for 'vote' with arguments '('',)' not found. 1 pattern(s) tried: ['polls/(?P<question_id>[0-9]+)/vote/$']
Exception Location:	C:\Users\Echalon\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\urls\resolvers.py in _reverse_with_prefix, line 497
Python Executable:	C:\Users\Echalon\AppData\Local\Programs\Python\Python36-32\python.exe
Python Version:	3.6.0
Python Path:	['C:\\Web Development\\mysite', 'C:\\Users\\Echalon\\AppData\\Local\\Programs\\Python\\Python36-32\\python36.zip', 'C:\\Users\\Echalon\\AppData\\Local\\Programs\\Python\\Python36-32\\DLLs', 'C:\\Users\\Echalon\\AppData\\Local\\Programs\\Python\\Python36-32\\lib', 'C:\\Users\\Echalon\\AppData\\Local\\Programs\\Python\\Python36-32', 'C:\\Users\\Echalon\\AppData\\Local\\Programs\\Python\\Python36-32\\lib\\site-packages']
Server time:	Thu, 4 May 2017 06:31:28 +0000

Error during template rendering

In template C:\Web Development\mysite\polls\templates\polls\detail.html, error at line 5

Reverse for 'vote' with arguments '('',)' not found. 1 pattern(s) tried: ['polls/(?P<question_id>[0-9]+)/vote/$']

1	<h1>{{ question.question_text }}</h1>
2
3	{% if error_message %}<p><strong>{{ error_message }}</strong></p>{% endif %}
4
5	<form action="{% url 'polls:vote' question.id %}" method="post">
6
7	{% csrf_token %}
8	{% for choice in question.choice_set.all %}
9	<input type="radio" name="choice" id="choice{{ forloop.counter }}" value="{{ choice.id }}" />
10	<label for="choice{{ forloop.counter }}">{{ choice.choice_text }}</label><br />
11	{% endfor %}
12	<input type="submit" value="Vote" />
13	</form>
14

Any help would be greatly appreciated.

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