TypeError: 'module' object is not callable Django 3 render function - python-3.x

Question

I am just making a simple hello world page in my Django 3 Application I am getting error
TypeError: 'module' object is not callable
Here is the error
TypeError at /
'module' object is not callable
Request Method: GET
Request URL: http://127.0.0.1:8000/
Django Version: 3.0.11
Exception Type: TypeError
Exception Value:
'module' object is not callable
Exception Location: C:\Users\admin\AppData\Roaming\Python\Python37\site- packages\django\template\context.py in bind_template, line 246
Python Executable: C:\Program Files (x86)\Microsoft Visual
Studio\Shared\Python37_64\python.exe
Python Version: 3.7.8
Python Path:
['C:\\Users\\admin\\Repositories\\django-docker\\django-portal-base\\app',
'C:\\Program Files (x86)\\Microsoft Visual '
'Studio\\Shared\\Python37_64\\python37.zip',
'C:\\Program Files (x86)\\Microsoft Visual
Studio\\Shared\\Python37_64\\DLLs',
'C:\\Program Files (x86)\\Microsoft Visual Studio\\Shared\\Python37_64\\lib',
'C:\\Program Files (x86)\\Microsoft Visual Studio\\Shared\\Python37_64',
'C:\\Users\\admin\\AppData\\Roaming\\Python\\Python37\\site-packages',
'C:\\Program Files (x86)\\Microsoft Visual '
'Studio\\Shared\\Python37_64\\lib\\site-packages']
Server time: Thu, 14 Jan 2021 19:15:32 +0000
It was working before but suddenly not working now. Here is my views.py
from django.shortcuts import render
# from django.http import HttpResponse
# from django.template import RequestContext, loader
# from django.template import Context
def index(request):
"""Placeholder index view"""
print('XXXX')
return render(request, 'hello_world/index.html')
#return HttpResponse('Hello, World!')
def test(request):
context = {'foo': 'bar'}
return render(request, 'hello_world/index.html', context)
The error is in line return render(request, 'hello_world/index.html') but when I change it to return HttpResponse('Hello, World!') it works fine.
My html file is very simple index.html
<h3> MY DJANGO APP</h3>
The html file is also in the correct folder templates/hello_world/index.html
settings
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
TEMPLATES = [
{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'DIRS': [os.path.join(BASE_DIR, 'templates')],
'APP_DIRS': False,
'OPTIONS': {
'context_processors': [
'django.template.context_processors.debug',
'django.template.context_processors.request',
'django.contrib.auth.context_processors.auth',
'django.contrib.messages.context_processors.messages',
'django.contrib.sessions'
],
},
},
]

Answer 1

django.contrib.sessions is not a callable object, hence it's not a valid context processor.
In fact, it's an app and, so, it should be in your INSTALLED_APPS list, not in the TEMPALTES context_processors list. Removing it from there should fix this issue.
Why is this happening?
The exception mentions that it is happening in django/template/context.py line 246 (in Django v3.0.11). If you see the source code at line 246, you can see that at this line Django is running the registered template context processors. Since, django.contrib.sessions is not a callable object, but a module, you get this exception message: 'module' object is not callable.