运行 sudo systemctl status gunicorn 时出现 ModuleNotFoundError 错误

Question

我正在尝试在 Ubuntu 服务器上部署一个 Django 项目。我遵循以下指导。

但是当我运行此命令时遇到一个问题sudo systemctl status gunicorn，出现此错误：

● gunicorn.service - gunicorn daemon
     Loaded: loaded (/etc/systemd/system/gunicorn.service; enabled; vendor preset: enabled)
     Active: failed (Result: exit-code) since Tue 2021-08-31 20:53:12 UTC; 6min ago
TriggeredBy: ● gunicorn.socket
    Process: 1918 ExecStart=/home/houssem/project/env/bin/gunicorn --access-logfile - --workers 3 --bind unix:/run/gunicorn.sock config.wsgi:application (code=exited, >
   Main PID: 1918 (code=exited, status=3)

Aug 31 20:53:12 ubuntu-20-lts gunicorn[1932]:   File "<frozen importlib._bootstrap>", line 991, in _find_and_load
Aug 31 20:53:12 ubuntu-20-lts gunicorn[1932]:   File "<frozen importlib._bootstrap>", line 973, in _find_and_load_unlocked
Aug 31 20:53:12 ubuntu-20-lts gunicorn[1932]: ModuleNotFoundError: No module named 'django_extensions'
Aug 31 20:53:12 ubuntu-20-lts gunicorn[1932]: [2021-08-31 20:53:12 +0000] [1932] [INFO] Worker exiting (pid: 1932)
Aug 31 20:53:12 ubuntu-20-lts gunicorn[1918]: [2021-08-31 20:53:12 +0000] [1918] [WARNING] Worker with pid 1931 was terminated due to signal 15
Aug 31 20:53:12 ubuntu-20-lts gunicorn[1918]: [2021-08-31 20:53:12 +0000] [1918] [WARNING] Worker with pid 1932 was terminated due to signal 15
Aug 31 20:53:12 ubuntu-20-lts gunicorn[1918]: [2021-08-31 20:53:12 +0000] [1918] [INFO] Shutting down: Master
Aug 31 20:53:12 ubuntu-20-lts gunicorn[1918]: [2021-08-31 20:53:12 +0000] [1918] [INFO] Reason: Worker failed to boot.
Aug 31 20:53:12 ubuntu-20-lts systemd[1]: gunicorn.service: Main process exited, code=exited, status=3/NOTIMPLEMENTED
Aug 31 20:53:12 ubuntu-20-lts systemd[1]: gunicorn.service: Failed with result 'exit-code'.

当我运行此命令时，gunicorn config.wsgi:application --preload -b 0.0.0.0:8000它运行正常并且我可以使用 IP 地址访问该网站。

我的gunicorn.service和/etc/systemd/system/gunicorn.socket文件如下所示：

# /etc/systemd/system/gunicorn.service
[Unit]
Description=gunicorn daemon
Requires=gunicorn.socket
After=network.target

[Service]
User=sammy
Group=www-data
WorkingDirectory=/home/sammy/myprojectdir
ExecStart=/home/sammy/myprojectdir/myprojectenv/bin/gunicorn \
          --access-logfile - \
          --workers 3 \
          --bind unix:/run/gunicorn.sock \
          myproject.wsgi:application

[Install]
WantedBy=multi-user.target

[Unit]
Description=gunicorn socket

[Socket]
ListenStream=/run/gunicorn.sock

[Install]
WantedBy=sockets.target

在此之前，指南中提到的所有与 gunicorn 相关的命令sudo systemctl status gunicorn均按预期工作，并打印与指南中相同的输出。

我搜索了解决方案，但不知道如何解决这个问题，我是 gunicorn 的新手。

那么请问有人能帮我解决这个问题吗？

如果提供的信息不够，我可以提供更多细节。

编辑

关于软件包，我已经从 requirements.txt 文件在 virtualenv 中安装了软件包：pip install -r requirements.txt。另外，我已经全局安装了 django-extension，但仍然有同样的错误。