Django does not render static files that are in subfolders within / static /

I'm working on a Django project that has static files (css / js / imgs) in the following structure:

File Structure

django_project
    |
    +apps
    |
    +django_project
        |
        +media
        |
        +static
            |
            +admin (múltiplas pastas e subpastas, PROBLEMA)
            |
            +css (apenas arquivos, sem problemas)
            |
            +imgs (apenas arquivos, sem problemas)
            |
            js (apenas arquivos, sem problemas)

When developing, the files work very well, all of them. However, in production, I'm having trouble rendering the files that are inside the folder (and its subfolders) admin. When I see the google chrome inspector, I see that it returns a 404 error for these files.

I do not know what's happening, but I imagine it's something related to urlpatterns.

Here are my settings.py and urls.py files:

settings.py

import os

BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))


# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/1.8/howto/deployment/checklist/

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

# SECURITY WARNING: don't run with debug turned on in production!
#DEBUG = True
DEBUG = False



ALLOWED_HOSTS = ['*']

MAX_UPLOAD_SIZE = 5242880

EMAIL_USE_TLS = True
EMAIL_HOST = 'smtp.gmail.com'
EMAIL_PORT = 587
EMAIL_HOST_USER = ''
EMAIL_HOST_PASSWORD = ''
DEFAULT_FROM_EMAIL = ''

MAIL_SNAKE_API_KEY = ''

LOGIN_REDIRECT_URL = '/app/'

ENDLESS_PAGINATION_PER_PAGE = 8

# Application definition

INSTALLED_APPS = (
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'crm',
    'blog',
    'vagas',
    'tinymce',
    'bootstrap3',
    'django_filters',
    'cadastros',
    'projetos',
    'comercial',
    'endless_pagination',
    'easy_pdf',
)

MIDDLEWARE_CLASSES = (
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
    'django.middleware.security.SecurityMiddleware',
)

ROOT_URLCONF = 'django_project.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': ['templates'],
        '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',
                'projetos.context_processors.UserInfo',

            ],
        },
    },
]

WSGI_APPLICATION = 'django_project.wsgi.application'


# Database
# https://docs.djangoproject.com/en/1.8/ref/settings/#databases

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.postgresql_psycopg2',
        'NAME': '',
        'USER': '',
        'PASSWORD': '',
        'HOST': 'localhost',
        'PORT': '',
    }
}

TINYMCE_DEFAULT_CONFIG = {
    'plugins': "table,paste,searchreplace",
    'theme': "advanced",
    'mode': "textareas",


}

# Internationalization
# https://docs.djangoproject.com/en/1.8/topics/i18n/

LANGUAGE_CODE = 'pt-br'

TIME_ZONE = 'America/Fortaleza'

USE_I18N = True

USE_L10N = True

USE_TZ = True


# Static files (CSS, JavaScript, Images)

STATIC_URL = '/static/'

STATICFILES_DIRS = (
    os.path.join(BASE_DIR, 'django_project', 'static'),
)

MEDIA_URL = '/media/'



MEDIA_ROOT = os.path.join(BASE_DIR, 'django_project', "media")

SECURE_PROXY_SSL_HEADER = ('HTTP_X_FORWARDED_PROTO', 'https')
SECURE_SSL_REDIRECT = True
SESSION_COOKIE_SECURE = True
CSRF_COOKIE_SECURE = True

urls.py

# -*- coding: utf-8 -*-
from django.conf.urls import include, url
from django.contrib import admin
from comercial.views import Proposta, GetPerson, GetPreco, TestePdf
from cadastros.views import EditarProfile
from crm.views import Index, AjaxCotacao, Politica, LeadGen, Pipe, SendEmail, Restrito, PessoasView, CotacoesView
from projetos.views import Jobs, AppDashboard, Arquivo, AddBriefing, Teste, Upload, Timeline, Aprovar
from blog.views import Blog, PostDetail
from django.conf import settings
from django.conf.urls.static import static
from django.contrib.auth import views as auth_views

urlpatterns = [
    url(r'^admin/', include(admin.site.urls)),
    url(r'^blog/(?P<pk>\d+)/$', PostDetail, name='PostDetail'),
    url(r'^blog/$', Index),
    url(r'^politica-de-privacidade/$', Politica),
    url(r'^tinymce/', include('tinymce.urls')),
    url(r'^ajax/create_cot/$', AjaxCotacao),
    url(r'^crm/pipe/$', Pipe),
    url(r'^teste/$', SendEmail),
    url(r'^app/$', AppDashboard),
    url(r'^app/teste/$', Teste),

    #cadastros 

    url(r'^app/profile/edit/$', EditarProfile),

    #login
    url(r'^app/login/$', auth_views.login, name='login'),
    url(r'^app/logout/$', auth_views.logout, {'next_page': '/'}, name='logout'),

    #comercial 
    url(r'^app/comercial/$', Proposta),
    url(r'^app/comercial/getperson/$', GetPerson),
    url(r'^app/comercial/getpreco/$', GetPreco),
    url(r'^app/comercial/testepdf/$', TestePdf),

    #pecas
    url(r'^app/pecas/$', Jobs),
    url(r'^app/pecas/(?P<pk>\d+)/$', AddBriefing, name='AddBriefing'),
    url(r'^app/pecas/arquivo/$', Arquivo),
    url(r'^app/pecas/(?P<pk>\d+)/upload/$', Upload, name='Upload'),
    url(r'^app/pecas/(?P<pk>\d+)/timeline/$', Timeline, name='Timeline'),
    url(r'^app/pecas/(?P<pk>\d+)/timeline/aprovar/$', Aprovar, name='Aprovar'),
    url(r'^restrito/$', Restrito),
    url(r'^restrito/pessoas/$', PessoasView),
    url(r'^restrito/comercial/cotacoes/$', CotacoesView),
    url(r'^b1c7879958231cf38ba31c55a46934eef7aa1c502fbffb6c71/$', LeadGen),
    url(r'', Index),
] + static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)