目标 WSGI 脚本“/var/www/backend/backend/wsgi.py”无法作为 Python 模块加载

Question

我正在 ubuntu 服务器上部署一个 Django Web 应用程序。配置已设置。但是，不知何故，它显示了 500 内部服务器错误。我检查了 apache 错误日志，发现以下错误条目：

[Tue Mar 26 08:50:56.540300 2019] [wsgi:error] [pid 18832] [remote 27.61.32.236:42365] mod_wsgi (pid=18832): Target WSGI script '/var/www/backend/backend/wsgi.py' cannot be loaded as Python module.
[Tue Mar 26 08:50:56.540376 2019] [wsgi:error] [pid 18832] [remote 27.61.32.236:42365] mod_wsgi (pid=18832): Exception occurred processing WSGI script '/var/www/backend/backend/wsgi.py'.
[Tue Mar 26 08:50:56.540498 2019] [wsgi:error] [pid 18832] [remote 27.61.32.236:42365] Traceback (most recent call last):
[Tue Mar 26 08:50:56.540542 2019] [wsgi:error] [pid 18832] [remote 27.61.32.236:42365]   File "/var/www/backend/backend/wsgi.py", line 12, in <module>
[Tue Mar 26 08:50:56.540553 2019] [wsgi:error] [pid 18832] [remote 27.61.32.236:42365]     from django.core.wsgi import get_wsgi_application
[Tue Mar 26 08:50:56.540584 2019] [wsgi:error] [pid 18832] [remote 27.61.32.236:42365] ImportError: No module named 'django'

我已经尝试了在 stackoverflow 上发现的相同错误的解决方案。我在这些配置上还有什么遗漏吗？

阿帕奇配置

Listen 8000
<VirtualHost *:8000>
WSGIDaemonProcess backendapp python-home=/var/www/backend/venv python-path=/var/www/backend
WSGIProcessGroup backendapp
WSGIPassAuthorization On
WSGIScriptAlias / /var/www/backend/backend/wsgi.py
ErrorLog /var/www/backend/error.log
CustomLog /var/www/backend/access.log combined
</VirtualHost>

wsgi.py

import os

from django.core.wsgi import get_wsgi_application

os.environ.setdefault("DJANGO_SETTINGS_MODULE", "backend.settings")

application = get_wsgi_application()

使用 python 3.6 和 mod_wsgi 在服务器上启用。