Missing staticfiles manifest entry on heroku app, runs fine locally

[James]

Hi everyone,

I'm getting server error 500 when I deploy my app to heroku. The logs show an issue with staticfiles, even though I'm serving static and media from an S3 bucket:

ValueError: Missing staticfiles manifest entry for 'images/favicon.ico'

What's odd is that run I run locally, even with DEBUG=False, the app runs fine and I verified that the images are loading from the S3 bucket (both media and static). However, for some reason heroku is unable to load from S3.

Settings.py:

import os
import storages
import django_heroku


# Build paths inside the project like this: os.path.join(BASE_DIR, ...)
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))




# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = '***'


# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = (os.environ.get('DEBUG_VALUE') == 'True')
#DEBUG = False


ALLOWED_HOSTS = ['localhost', 'testapp.herokuapp.com', 'testapp.tv']




# Application definition
# NOTE: django_cleanup should be placed last in INSTALLED_APPS.
INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'taggit',
    'storages',
    'post.apps.PostConfig',
    'ckeditor',
    'sorl.thumbnail',
    'django_cleanup.apps.CleanupConfig',
]


MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
]


ROOT_URLCONF = 'testapp.urls'


TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [],
        'APP_DIRS': True,
        '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',
            ],
        },
    },
]


WSGI_APPLICATION = 'testapp.wsgi.application'




# Database
# https://docs.djangoproject.com/en/3.0/ref/settings/#databases


DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
    }
}




# Password validation
# https://docs.djangoproject.com/en/3.0/ref/settings/#auth-password-validators


AUTH_PASSWORD_VALIDATORS = [
    {
        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
    },
]




# Internationalization
# https://docs.djangoproject.com/en/3.0/topics/i18n/


LANGUAGE_CODE = 'en-us'


TIME_ZONE = 'UTC'


USE_I18N = True


USE_L10N = True


USE_TZ = True




# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/3.0/howto/static-files/


# STATIC_URL = '/static/'


# # Add these new lines
# STATICFILES_DIRS = (
#     os.path.join(BASE_DIR, 'static'),
# )


# STATIC_ROOT = os.path.join(BASE_DIR, 'staticfiles')


# Form messages
from django.contrib.messages import constants as messages


MESSAGE_TAGS= {
    messages.DEBUG: 'alert-info',
    messages.INFO: 'alert-info',
    messages.SUCCESS: 'alert-success',
    messages.WARNING: 'alert-warning',
    messages.ERROR: 'alert-danger',
}


# Memcached settings
CACHES = {
    'default': {
        'BACKEND': 'django.core.cache.backends.memcached.MemcachedCache',
        'LOCATION': '127.0.0.1:11211',
    }
}


# Amazon S3 settings and variables
AWS_ACCESS_KEY_ID = os.environ.get('AWS_ACCESS_KEY_ID')
AWS_SECRET_ACCESS_KEY = os.environ.get('AWS_SECRET_ACCESS_KEY')
AWS_STORAGE_BUCKET_NAME = 'testapp-files'


AWS_S3_FILE_OVERWRITE = False
AWS_DEFAULT_ACL = None


AWS_LOCATION = 'static'
AWS_S3_CUSTOM_DOMAIN='%s.s3.amazonaws.com' % AWS_STORAGE_BUCKET_NAME
AWS_S3_OBJECT_PARAMETERS = {    
     'CacheControl': 'max-age=86400',
}


DEFAULT_FILE_STORAGE = 'storages.backends.s3boto3.S3Boto3Storage'
#DEFAULT_FILE_STORAGE = 'testapp.storage_backends.MediaStorage'
STATICFILES_STORAGE = "storages.backends.s3boto3.S3Boto3Storage"
STATICFILES_DIRS = [
    os.path.join(BASE_DIR, 'static'),
]
STATIC_URL='https://%s/%s/' % (AWS_S3_CUSTOM_DOMAIN, AWS_LOCATION)
ADMIN_MEDIA_PREFIX = STATIC_URL + 'admin/'
STATICFILES_FINDERS = (           'django.contrib.staticfiles.finders.FileSystemFinder',    'django.contrib.staticfiles.finders.AppDirectoriesFinder',
)


AWS_QUERYSTRING_AUTH = False




django_heroku.settings(locals())

Any help would be greatly appreciated. Thanks!!