I am trying to deploy my app to heroku.
Deploy was done correctly but I got Server Error(500).
When I turned DEBUG true, Sever Error doesn't occurred.
So I think there is something wrong with loading staticfiles.

I can't find any notable, critical error in log.
I have already installed whitenoise, but it doesn't work.

Is there anyone who solves this problem?

heroku logs

2019-02-26T17:01:26.064554+00:00 heroku[web.1]: State changed from down to starting
2019-02-26T17:01:34.347474+00:00 heroku[web.1]: Starting process with command `gunicorn project5.wsgi --log-file -`
2019-02-26T17:01:37.602081+00:00 heroku[web.1]: State changed from starting to up
2019-02-26T17:01:37.192553+00:00 app[web.1]: [2019-02-26 17:01:37 +0000] [4] [INFO] Starting gunicorn 19.9.0
2019-02-26T17:01:37.199091+00:00 app[web.1]: [2019-02-26 17:01:37 +0000] [4] [INFO] Listening at: http://0.0.0.0:35760 (4)
2019-02-26T17:01:37.199669+00:00 app[web.1]: [2019-02-26 17:01:37 +0000] [4] [INFO] Using worker: sync
2019-02-26T17:01:37.219788+00:00 app[web.1]: [2019-02-26 17:01:37 +0000] [10] [INFO] Booting worker with pid: 10
2019-02-26T17:01:37.317796+00:00 app[web.1]: [2019-02-26 17:01:37 +0000] [11] [INFO] Booting worker with pid: 11
2019-02-26T17:01:39.269757+00:00 heroku[router]: at=info method=GET path="/" host=shunka-blog.herokuapp.com request_id=a5a7c921-c0d2-4bc2-8831-371da12d3945 fwd="111.239.176.72" dyno=web.1 connect=0ms service=522ms status=500 bytes=234 protocol=https
2019-02-26T17:01:39.271879+00:00 app[web.1]: 10.99.220.185 - - [27/Feb/2019:02:01:39 +0900] "GET / HTTP/1.1" 500 27 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.109 Safari/537.36"

settings.py

import os
import dj_database_url
import django_herokuBASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))DEBUG = FalseSECRET_KEY = ***ALLOWED_HOSTS = []# Application definitionINSTALLED_APPS = ['blog5.apps.Blog5Config','django.contrib.admin','django.contrib.auth','django.contrib.contenttypes','django.contrib.sessions','django.contrib.messages','django.contrib.staticfiles','django.contrib.humanize','markdownx','widget_tweaks',
]MIDDLEWARE = ['django.middleware.security.SecurityMiddleware','whitenoise.middleware.WhiteNoiseMiddleware','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',
]STATICFILES_STORAGE = 'whitenoise.storage.CompressedManifestStaticFilesStorage'ROOT_URLCONF = 'project5.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 = 'project5.wsgi.application'DATABASES = { 'default': dj_database_url.config() }
SECURE_PROXY_SSL_HEADER = ('HTTP_X_FORWARDED_PROTO', 'https')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',},
]LANGUAGE_CODE = 'ja'TIME_ZONE = 'Asia/Tokyo'USE_I18N = TrueUSE_L10N = TrueUSE_TZ = TrueSTATIC_ROOT = os.path.join(BASE_DIR, 'staticfiles')
STATIC_URL = '/static/'# STATICFILES_DIRS = (
#     os.path.join(BASE_DIR, 'static'),
# )MEDIA_ROOT = os.path.join(BASE_DIR, 'media')
MEDIA_URL = '/media/'os.makedirs(STATIC_ROOT, exist_ok=True)try:from .local_settings import *
except ImportError:passdjango_heroku.settings(locals())

wsgi.py

import os
from django.core.wsgi import get_wsgi_applicationos.environ.setdefault('DJANGO_SETTINGS_MODULE', 'project5.settings')application = get_wsgi_application()

Procfile

web: gunicorn project5.wsgi --log-file -

This doesn't have anything to do with whitenoise. The problem is your ALLOWED_HOSTS setting; this needs to have the hostname of your site.