React&Django stack. Deploy on Heroku when Set Debug = False app Show blank page but admin page working

Question

Problem: When i set DEBUG = False and deployed myapp to the heroku. myapp page is not show anything(blank page) but in "https://myappname.heroku/admin" it's working, and if i run on my locallhost (python manage.py runserver)there's no any problem

Setting.py:

import os
from pathlib import Path
import django_heroku
import dj_database_url

# Build paths inside the project like this: BASE_DIR / 'subdir'.
BASE_DIR = Path(__file__).resolve().parent.parent


# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/4.0/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = 'django-insecure-()1p5aqa_pt&hjn29=k$%t&hjn29=k$t&hjn29=k$'

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

ALLOWED_HOSTS = ['https://sbuilt-react-django.herokuapp.com/',
                 'http://127.0.0.1:8000/']


# Application definition

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'myapp',
    'rest_framework',
    'corsheaders'
]

CORS_ORIGIN_WHITELIST = [
    'http://localhost:3000',
]

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',
    "corsheaders.middleware.CorsMiddleware",
    "django.middleware.common.CommonMiddleware",
]

STATICFILES_STORAGE = "django.contrib.staticfiles.storage.ManifestStaticFilesStorage"

ROOT_URLCONF = 'sbuilt.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [
            './build',
        ],
        '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 = 'sbuilt.wsgi.application'


# Database
# https://docs.djangoproject.com/en/4.0/ref/settings/#databases

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': BASE_DIR / 'db.sqlite3',
    }
}

DATABASES['default'] = dj_database_url.config(
    default='postgres://fetjtshpanyppx:76cbb8ac254c5a81c5d96e05c7a22c17af991796cdad577e7fc20ad5f957416c@ec2-54-165-178-178.compute-1.amazonaws.com:5432/dfv2autarb32ks')

# Password validation
# https://docs.djangoproject.com/en/4.0/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/4.0/topics/i18n/

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'UTC'

USE_I18N = True

USE_TZ = True


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/4.0/howto/static-files/

STATIC_URL = '/static/'
STATIC_ROOT = os.path.join(BASE_DIR, 'staticfiles')
MEDIA_URL = '/media/'
MEDIA_ROOT = os.path.join(BASE_DIR, 'media')

STATICFILES_DIRS = ['./build/static']


# Default primary key field type
# https://docs.djangoproject.com/en/4.0/ref/settings/#default-auto-field

DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'

CORS_ALLOW_ALL_ORIGINS = True


django_heroku.settings(locals())

Wsgi.py:

from whitenoise import WhiteNoise
from django.core.wsgi import get_wsgi_application
import os
from pathlib import Path
BASE_DIR = Path(__file__).resolve().parent.parent

os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'sbuilt.settings')
application = get_wsgi_application()
application = WhiteNoise(
    application, root=os.path.join(BASE_DIR, 'staticfiles'))