我一直在努力寻找下面代码中的错误。我有一个Flask/PostgreSQL/SQLAlchemy程序托管在一个GCP计算引擎虚拟机上，使用Nginx和Gunicorn作为服务器解决方案。
我的工作是编写代码，而不是部署它。（最好有更多的技能，但它就是这样。）而且我现在没有任何人可以委托这项任务或获得帮助。
该应用程序在本地部署没有任何问题。然而，将其放在GCP服务器上有点问题。我已经检查了几十个Stackoverflow帖子，并在Google上搜索了每个短语迭代，但我无法找出代码的哪一部分是关闭的。
Nginx服务器是在线的，因为当我在浏览器中检查域时，我会看到“欢迎使用nginx！”页面。但在gunicorn启动后，服务失败。请参阅下面的代码。知识渊博的建议将不胜感激。
计算虚拟机/home/user/上的my_project文件夹

user@my_project-vm:~/my_project$ ls -la
total 72
drwxr-xr-x  8 user user     4096 Dec 27 21:00 .
drwxr-xr-x  8 user user     4096 Dec 27 21:13 ..
-rw-r--r--  1 user user     2148 Dec 27 05:00 .env
-rw-r--r--  1 user user       34 Dec 27 20:56 .flaskenv
drwxr-xr-x  8 user user     4096 Dec 27 20:56 .git
-rw-r--r--  1 user user     1039 Dec 27 04:41 .gitignore
drwxr-xr-x  2 user user     4096 Dec 27 04:41 .vscode
-rw-r--r--  1 user user     2322 Dec 27 04:41 GCP_email_notification.json
drwxr-xr-x  2 user www-data 4096 Dec 27 20:10 __pycache__
drwxr-xr-x 10 user user     4096 Dec 27 20:56 app
-rw-r--r--  1 user user     7403 Dec 27 20:56 app.py
-rw-r--r--  1 user user      604 Dec 27 04:41 extensions.py
srwxrwx---  1 user www-data    0 Dec 27 21:00 my_project.sock
drwxr-xr-x  3 user user     4096 Dec 27 04:41 migrations
-rw-r--r--  1 user user     1740 Dec 27 05:00 requirements.txt
-rw-r--r--  1 user user      810 Dec 27 04:41 tmp-policy.json
drwxr-xr-x  6 user user     4096 Dec 27 04:48 venv
-rw-r--r--  1 user user       45 Dec 27 20:10 wsgi.py

字符串
/home/user/my_project/上的wsgi.py

from app import create_app
app = create_app()

型
/home/user/my_project/上的app.py

from app import create_app

if __name__ == "__main__":
    app = create_app()
    app.run(host='0.0.0.0')

型
/home/user/my_project/app/上的__init__.py

import ...

def create_app(): 
    app = Flask(__name__,
                static_url_path='/',
                static_folder='../app/static',
                template_folder='../app/templates')
    ...
    app.config.from_object(config['default'])
    config['default'].init_app(app)

    @app.context_processor
    ...

    @app.template_filter('datetime')
    ...
              
    api.init_app(app)
    db.init_app(app)
    mail.init_app(app)
    moment.init_app(app)

    from app.models import ...

    migrate = Migrate(app, db)
    
    from .templates.about import about_bp
    from .templates.errors import error_bp
    from .templates.main import main_bp
    ...

    app.register_blueprint(main_bp)
    app.register_blueprint(error_bp)
    app.register_blueprint(about_bp, url_prefix='/about')
    ...

    return app

型
/etc/nginx/sites/available上的my_project

server {
    listen 80;
    server_name my_domain.com www.my_domain.com;

    location / {
        proxy_pass http://unix:/home/user/my_project/my_project.sock
        }
    }

型
/etc/systemd/system上的my_project.service

[Unit]
    Description= You can change time text
    After=network.target

    [Service]
    User=user
    Group=www-data
    WorkingDirectory=/home/user/my_project
    Environment="PATH=/home/user/my_project/venv/bin"
    ExecStart=/home/user/my_project/venv/bin/gunicorn --workers 3 --bind unix:my_project.sock -m 007 wsgi:app

    [Install]
    WantedBy=multi-user.target

型
这是我在sudo systemctl status my_project之后得到的。最后一行是事情向南的地方...

my_project.service - my_project primary web server setup
     Loaded: loaded (/etc/systemd/system/my_project.service; enabled; vendor preset: enabled)
     Active: active (running) since Wed 2023-12-27 21:00:09 UTC; 1h 22min ago
   Main PID: 131051 (gunicorn)
      Tasks: 7 (limit: 2353)
     Memory: 207.9M
        CPU: 6.629s
     CGroup: /system.slice/my_project.service
             ├─131051 /home/user/my_project/venv/bin/python3 /home/user/my_project/venv/bin/gunicorn --workers 3 --bind unix:my_project.sock -m 007 wsgi:app
             ├─131052 /home/user/my_project/venv/bin/python3 /home/user/my_project/venv/bin/gunicorn --workers 3 --bind unix:my_project.sock -m 007 wsgi:app
             ├─131053 /home/user/my_project/venv/bin/python3 /home/user/my_project/venv/bin/gunicorn --workers 3 --bind unix:my_project.sock -m 007 wsgi:app
             └─131054 /home/user/my_project/venv/bin/python3 /home/user/my_project/venv/bin/gunicorn --workers 3 --bind unix:my_project.sock -m 007 wsgi:app

Dec 27 21:00:09 my_project systemd[1]: Started my_project primary web server setup.
Dec 27 21:00:09 my_project gunicorn[131051]: [2023-12-27 21:00:09 +0000] [131051] [INFO] Starting gunicorn 21.2.0
Dec 27 21:00:09 my_project gunicorn[131051]: [2023-12-27 21:00:09 +0000] [131051] [INFO] Listening at: unix:my_project.sock (131051)
Dec 27 21:00:09 my_project gunicorn[131051]: [2023-12-27 21:00:09 +0000] [131051] [INFO] Using worker: sync
Dec 27 21:00:09 my_project gunicorn[131052]: [2023-12-27 21:00:09 +0000] [131052] [INFO] Booting worker with pid: 131052
Dec 27 21:00:09 my_project gunicorn[131053]: [2023-12-27 21:00:09 +0000] [131053] [INFO] Booting worker with pid: 131053
Dec 27 21:00:09 my_project gunicorn[131054]: [2023-12-27 21:00:09 +0000] [131054] [INFO] Booting worker with pid: 131054
Dec 27 21:52:46 my_project systemd[1]: my_project.service: Current command vanished from the unit file, execution of the command list won't be resumed.

型
提前感谢。享受假期！