当我从我的前端应用程序（Fetch API）向我的Django服务器发出一个put请求时，我一直收到一个CORS错误，而不是从Postman发出。下面是错误：
阻止的跨域请求：同源策略不允许阅读https://q72y0iroi2.execute-api.us-west-2.amazonaws.com/weightsheets/636上的远程资源。（原因：缺少CORS标题“Access-Control-Allow-Origin”）。状态代码：503.
GET、POST和DELETE请求工作正常。
我已经尝试了文档中建议的所有django-cors-headers的设置，但都没有用！
任何建议都将不胜感激
这里是我的settings.py:

BASE_DIR = Path(__file__).resolve().parent.parent

SECRET_KEY = os.getenv("DJANGO_SECRET_KEY", get_random_secret_key())

DEBUG = os.getenv("DEBUG", "False")

ALLOWED_HOSTS = ['*']

DEVELOPMENT_MODE = os.getenv("DEVELOPMENT_MODE", "False")

# Application definition

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

REST_FRAMEWORK = {
    'DEFAULT_AUTHENTICATION_CLASSES': (
        'rest_framework.authentication.TokenAuthentication',
    ),
    'DEFAULT_PERMISSION_CLASSES': [
        'rest_framework.permissions.IsAuthenticated',
    ],
}

# List of allowed origins

CORS_ALLOW_ALL_ORIGINS = True

CORS_ALLOW_METHODS = (
    "DELETE",
    "GET",
    "OPTIONS",
    "PATCH",
    "POST",
    "PUT",
)

CORS_ALLOW_HEADERS = (
    "accept",
    "authorization",
    "content-type",
    "user-agent",
    "x-csrftoken",
    "x-requested-with",
)
CORS_ALLOW_CREDENTIALS = True


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

ROOT_URLCONF = 'weighttracking.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 = 'weighttracking.wsgi.application'

# Database
# https://docs.djangoproject.com/en/4.1/ref/settings/#databases

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.postgresql',
        'NAME': 'railway',
        'USER' : 'postgres',
        'PASSWORD' : '*****************',
        'HOST' : 'containers-us-west-11.railway.app',
        'PORT' : '7866',
    }
}

# Password validation
# https://docs.djangoproject.com/en/4.1/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',
    },
]

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'UTC'

USE_I18N = True

USE_TZ = True


STATIC_URL = 'static/'
# STATICFILES_DIRS = [os.path.join(BASE_DIR, 'static')]
STATIC_ROOT =os.path.join(BASE_DIR, 'staticfiles')

# Default primary key field type
# https://docs.djangoproject.com/en/4.1/ref/settings/#default-auto-field

DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'