TemplateDoesNotExist – Django Error

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I"m using Django Rest Framework. and I keep getting an error

Exception Type: TemplateDoesNotExist
Exception Value: rest_framework/api.html

I dont know how I"m going wrong. This is the first time I"m trying out hands on REST Framework. This is code.

views.py

import socket, json
from modules.data.models import *
from modules.utils import *
from rest_framework import status
from rest_framework.decorators import api_view
from rest_framework.response import Response
from modules.actions.serializers import ActionSerializer


@api_view(["POST"])
@check_field_exists_wrapper("installation")
def api_actions(request, format = None):

    action_type = request.POST["action_type"]
    if action_type == "Shutdown" : 
        send_message = "1"
        print "Shutting Down the system..."
    elif action_type == "Enable" : 
        send_message = "1"
        print "Enabling the system..."
    elif action_type == "Disable" : 
        send_message = "1"
        print "Disabling the system..."
    elif action_type == "Restart" : 
        send_message = "1"
        print "Restarting the system..."

    if action_type in ["Shutdown", "Enable", "Disable"] : PORT = 6000
    else : PORT = 6100

    controllers_list = Controller.objects.filter(installation_id = kwargs["installation_id"])

    for controller_obj in controllers_list:
        ip = controller_obj.ip
        try:
            s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
            s.connect((ip, PORT))
            s.send(send_message)
            s.close()
        except Exception as e:
            print("Exception when sending " + action_type +" command: "+str(e))

    return Response(status = status.HTTP_200_OK)

models.py

class Controller(models.Model):
    id = models.IntegerField(primary_key = True)
    name = models.CharField(max_length = 255, unique = True)
    ip = models.CharField(max_length = 255, unique = True)
    installation_id = models.ForeignKey("Installation")

serializers.py

from django.forms import widgets from rest_framework import serializers from modules.data.models import *

class ActionSerializer(serializers.ModelSerializer):
    class Meta:
        model = Controller
        fields = ("id", "name", "ip", "installation_id")

urls.py

from django.conf.urls import patterns, url
from rest_framework.urlpatterns import format_suffix_patterns

urlpatterns = patterns("modules.actions.views",
    url(r"^$","api_actions",name="api_actions"),
)

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TemplateDoesNotExist - Django Error __del__: Questions

import time
time.sleep(5)   # Delays for 5 seconds. You can also use a float value.

import time
while True:
    print("This prints once a minute.")
    time.sleep(60) # Delay for 1 minute (60 seconds).

from time import sleep
sleep(0.1) # Time in seconds

TemplateDoesNotExist - Django Error __del__: Questions

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