2👍
✅
Solved !!
I was making a mistake of using ‘POST’ method in the Edit Link.
<form method='post' action="{% url 'photo_update' username=username pk=photo.pk %}">
{% csrf_token %}
<input type="submit" value="Edit Photo" class="btn btn-primary">
</form>
changed to
<form action="{% url 'photo_update' username=username pk=photo.pk %}">
{% csrf_token %}
<input type="submit" value="Edit Photo" class="btn btn-primary">
</form>
Source:stackexchange.com