Python 在Heroku的django网站部署上没有这样的表

我以前在Heroku上部署django应用程序时遇到了关于静态目录的问题。但是现在我已经能够在更改settings.py后部署我的网站了，抛出一个名为“无此类表”的错误。然后我转到stackoverflow寻求解决方案，但没有任何效果。我正在此处添加我的settings.py文件，该文件也包含stackoverflow解决方案。我已经为使用PostgreSQL编写了一条if语句，如stackoverflow帖子中所述，但该语句也不起作用。您可能会在最后一篇文章中看到该if语句line.My requirements.txt都是正确的，所以没有问题。请帮助我

from pathlib import Path
import os

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


# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/3.1/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = '^&ahv#0-lkixr5bfk&)=2%$m$y8kg%z3wt_q)-m(&#u#^xu+pu'

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

ALLOWED_HOSTS = ['django-blog-sayan.herokuapp.com', '127.0.0.1']


# Application definition

INSTALLED_APPS = [
    'blog.apps.BlogConfig',
    'users.apps.UsersConfig',
    'crispy_forms',
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
]

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',
]

ROOT_URLCONF = 'django_project.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 = 'django_project.wsgi.application'


# Database
# https://docs.djangoproject.com/en/3.1/ref/settings/#databases

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


# Password validation
# https://docs.djangoproject.com/en/3.1/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',
    },
]


# Internationalization
# https://docs.djangoproject.com/en/3.1/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/3.1/howto/static-files/

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

STATICFILES_DIRS = [

    os.path.join(BASE_DIR, 'static'),

]

os.makedirs(STATIC_TMP, exist_ok=True)
os.makedirs(STATIC_ROOT, exist_ok=True)

STATICFILES_STORAGE = 'whitenoise.storage.CompressedManifestStaticFilesStorage'

CRISPY_TEMPLATE_PACK = 'bootstrap4'

LOGIN_REDIRECT_URL = 'blog-home'
LOGIN_URL = 'login'

if 'DATABASE_URL' in os.environ:
    import dj_database_url
    DATABASES = {'default': dj_database_url.config()} 

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当脱掉Django时，我总是遵循本教程

在评论中，您告诉我您进行了迁移，然后在部署之前进行了迁移

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在heroku端部署之后，必须完成这些操作，因为它们将在heroku数据库上创建表。

您是否进行了迁移和迁移？是的，我进行了迁移，然后再次部署部署在部署之后，进入heroku cli并进行迁移和迁移