Deploying Django To Heroku - Server Error (500)

I have been making a django app, and am now trying to deploy it to heroku. However when I go on it, says Server Error (500), and the log says: 2017-05-27T21:00:14.634310+00:00 heroku[router]: at=info method=GET path="/" host=remberit.herokuapp.com request_id=065d27c6-9211-458f-9fc6-bb677d43581e fwd="86.13.204.65" dyno=web.1 connect=0ms service=151ms status=500 bytes=387 protocol=https

Here is my settings.py (at learst the relevant parts, but please ask if you would like the rest):

PROJECT_ROOT = os.path.dirname(os.path.abspath(__file__)) STATIC_ROOT = os.path.join(PROJECT_ROOT, "staticfiles") STATIC_URL = '/static/' STATICFILES_DIRS = ( os.path.join(BASE_DIR, 'static'), ) STATICFILES_STORAGE = 'whitenoise.django.GzipManifestStaticFilesStorage' import dj_database_url DATABASES['default'] = dj_database_url.config() SECURE_PROXY_SSL_HEADER = ('HTTP_X_FORWARDED_PROTO', 'https') ALLOWED_HOSTS = ['*'] DEBUG = False try: from .local_settings import * except ImportError: pass 

And here is my wsgi.py:

import os from django.core.wsgi import get_wsgi_application #from whitenoise.django import DjangoWhiteNoise import django os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'remberit.settings') django.setup() application = get_wsgi_application() #application = DjangoWhiteNoise(application) 

Here is my Procfile:

web: gunicorn remberit.wsgi 

Here is my runtime.txt:

python-3.5.2 

Here is my requirements.txt:

appdirs==1.4.3 dj-database-url==0.4.2 gunicorn==19.7.1 packaging==16.8 pyparsing==2.2.0 six==1.10.0 whitenoise==3.3.0 psycopg2==2.6.2 

And here is the output of pip freeze:

appdirs==1.4.3 dj-database-url==0.4.2 gunicorn==19.7.1 packaging==16.8 pyparsing==2.2.0 six==1.10.0 whitenoise==3.3.0 

Also, when I run the app locally with gunicorn remberit.wsgi or python manage.py runserver it works fine, it only doesn't work when I use heroku.

Please tell me if you need anymore information.

7 Answers

Other solution that may solve your issue: Comment out or remover the GzipManifestStaticFilesStorage from whitenoise. For some reason this is not working well.

# STATICFILES_STORAGE = 'whitenoise.django.GzipManifestStaticFilesStorage' 

Found this solution on Why would django fail with server 500 only when Debug=False AND db is set to production database on Heroku?

As mustapha-belkacim said, you need to migrate your apps:

heroku run python manage.py migrate 

I had a similar problem when I first deployed my app to heroku, in my case it was the database that needs migrations. So I had to run this commande:

heroku run -a your-app-name python manage.py migrate 

take a look at this tutorial

Please provide (or check) your TEMPLATES variable from settings. Make sure the 'DIRS' value points to the right template folder where index.html (or base template) is.

I faced a similar error and this was the problem in my case.

As commented in other question (Django app deployed to Heroku producing Server error 500), I realized this after turning DEBUG to True in production for a brief moment to find better help on the issue. Then, back to False of course.

Does your /admin works? If so, this answer might help you. If not, there is a number of things that can go wrong, maybe others can help? (eg: Why is psycopg2 not outputted with pip freeze if you have it in requirements.txt? Is it installed? Are you working with postgreSQL on both local and production environments?)

I also faced the same problem so the best and quickest solution is to remove this line:

STATICFILES_STORAGE = 'whitenoise.django.GzipManifestStaticFilesStorage'

and add this:

STATICFILES_STORAGE = 'django.contrib.staticfiles.storage.StaticFilesStorage'

A 500 error could be a lot of possible things. Set DEBUG=True temporarily to get more information.

Make sure you aren't linking any non existing external file, like in my case I had few css files linked with my html but the actual files were deleted.