在“Django 项目名称”中找不到属性“应用程序”。 Heroku 应用部署

Question

I deployed my Django project with Heroku successfully but when I view my app I get an error page saying

Application error An error occurred in the application and your page could not be served. If you are the application owner, check your logs for details. You can do this from the Heroku CLI with the command

heroku logs --tail

when I put it in terminal I get this message

2021-03-16T08:50:34.762969+00:00 app[web.1]: [2021-03-16 08:50:34 +0000] [4] [INFO] Starting gunicorn 20.0.4
2021-03-16T08:50:34.763493+00:00 app[web.1]: [2021-03-16 08:50:34 +0000] [4] [INFO] Listening at: http://0.0.0.0:55178 (4)
2021-03-16T08:50:34.763587+00:00 app[web.1]: [2021-03-16 08:50:34 +0000] [4] [INFO] Using worker: sync
2021-03-16T08:50:34.767113+00:00 app[web.1]: [2021-03-16 08:50:34 +0000] [8] [INFO] Booting worker with pid: 8
2021-03-16T08:50:34.770278+00:00 app[web.1]: Failed to find attribute 'application' in 'ourUI'.
2021-03-16T08:50:34.770403+00:00 app[web.1]: [2021-03-16 08:50:34 +0000] [8] [INFO] Worker exiting (pid: 8)
2021-03-16T08:50:34.794976+00:00 app[web.1]: [2021-03-16 08:50:34 +0000] [9] [INFO] Booting worker with pid: 9
2021-03-16T08:50:34.799785+00:00 app[web.1]: Failed to find attribute 'application' in 'ourUI'.
2021-03-16T08:50:34.799990+00:00 app[web.1]: [2021-03-16 08:50:34 +0000] [9] [INFO] Worker exiting (pid: 9)
2021-03-16T08:50:34.904166+00:00 app[web.1]: [2021-03-16 08:50:34 +0000] [4] [INFO] Shutting down: Master
2021-03-16T08:50:34.904279+00:00 app[web.1]: [2021-03-16 08:50:34 +0000] [4] [INFO] Reason: App failed to load.
2021-03-16T08:50:37.000000+00:00 app[api]: Build succeeded
2021-03-16T08:50:39.982849+00:00 heroku[web.1]: Starting process with command `gunicorn ourUI`
2021-03-16T08:50:42.245442+00:00 heroku[web.1]: Process exited with status 4
2021-03-16T08:50:42.310353+00:00 heroku[web.1]: State changed from starting to crashed
2021-03-16T08:50:42.140009+00:00 app[web.1]: [2021-03-16 08:50:42 +0000] [4] [INFO] Starting gunicorn 20.0.4
2021-03-16T08:50:42.140941+00:00 app[web.1]: [2021-03-16 08:50:42 +0000] [4] [INFO] Listening at: http://0.0.0.0:31341 (4)
2021-03-16T08:50:42.141087+00:00 app[web.1]: [2021-03-16 08:50:42 +0000] [4] [INFO] Using worker: sync
2021-03-16T08:50:42.145144+00:00 app[web.1]: [2021-03-16 08:50:42 +0000] [8] [INFO] Booting worker with pid: 8
2021-03-16T08:50:42.148479+00:00 app[web.1]: Failed to find attribute 'application' in 'ourUI'.
2021-03-16T08:50:42.148628+00:00 app[web.1]: [2021-03-16 08:50:42 +0000] [8] [INFO] Worker exiting (pid: 8)
2021-03-16T08:50:42.182612+00:00 app[web.1]: [2021-03-16 08:50:42 +0000] [4] [INFO] Shutting down: Master
2021-03-16T08:50:42.182707+00:00 app[web.1]: [2021-03-16 08:50:42 +0000] [4] [INFO] Reason: App failed to load.
2021-03-16T08:51:10.997193+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=hdpcapp.herokuapp.com request_id=ff5bdf78-e5b6-41cf-80e6-1bdf1d5f81f5 fwd="51.39.244.104" dyno= connect= service= status=503 bytes= protocol=https

this is my Procfile

web: gunicorn ourUI

requirement.txt

asgiref==3.3.1
Django==3.1.7
gunicorn==20.0.4
pytz==2021.1
sqlparse==0.4.1
whitenoise==5.2.0

ourUI is my Django project

ourUI/setting.py

import os
from pathlib import Path

# 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/3.1/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = 'a-skd+xzh4&dka$6(wl5q*#7%b%q8a%aijy70cc#(5mw6+y25-'

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

ALLOWED_HOSTS = ['hdpcapp.herokuapp.com', '127.0.0.1']


# Application definition

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'TheUI'
]

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 = 'ourUI.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [os.path.join(BASE_DIR,'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',
            ],
        },
    },
]

WSGI_APPLICATION = 'ourUI.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, 'dtsticfiles')
STATIC_URL = '/static/'

ourUI/wsgi.py

import os

from django.core.wsgi import get_wsgi_application

os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'ourUI.settings')

application = get_wsgi_application()

I'm new to Django and heroku I hope I can get a solution for this

Answer 1

I solved this problem by editing my Procfile to

web: gunicorn ourUI.wsgi

and fixed w and n to W and N in (setting.py)

'whitenoise.middleware.whitenoiseMiddleware',

to

'whitenoise.middleware.WhiteNoiseMiddleware',