使用 Gunicorn 和 Nginx 从生产中的 Django 应用程序下载文件时出错

Question

我已使用本指南在 AWS EC2 实例上部署了 Django 应用程序。

一切正常，但当我下载 Excel 文件时出现错误。（Excel是使用opnenpyxl库创建的）。

下载xlsx文件时，应用程序正在返回download.htm文件。一切在开发服务器上都运行良好。

我试过

1. 添加和删​​除download标签。<a href="{% url 'download_estimate_excel_file' project.id project.name %}" class="dropdown-item" download> Download Excel </a>。[没用]
2. 添加[service] Environment="LANG=ru_RU.UTF-8"到gunicorn.service文件（也在StackOverflow上找到了这个）。[没用]

编辑：

Gunicorn 配置的路径：/etc/systemd/system/gunicorn.service

>> GUNICRON CONFIG

[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
Environment="LANG=ru_RU.UTF-8"

[Install]
WantedBy=multi-user.target

Nginx 配置的路径：/etc/nginx/sites-available/<myproject>

>> NGINX CONFIG

server {
    listen 80;
    server_name server_domain_or_IP;

    location = /favicon.ico { access_log off; log_not_found off; }
    location /static/ {
        root /home/sammy/myprojectdir;
    }

    location / {
        include proxy_params;
        proxy_pass http://unix:/run/gunicorn.sock;
    }
}

>> download_estimate_excel_file function

@login_required
def download_estimate_excel_file(request, project_id, project_name):
    project_tnc_obj = ProjectTermsAndConditions.objects.filter(
        project=project_id)
    date_time_obj = datetime.now()
    current_date = date_time_obj.strftime('%x')
    current_time = date_time_obj.strftime('%X')

    filename = project_name + '_' + str(current_date).replace('/', "-") + '_' + str(current_time).replace(":", "-") + ".xlsx"

    file_path = "media/excel/" + filename

    ...
    ...

    sheet.append([""])

    workbook.save(filename=str(file_path))
    workbook.close()
    file_ecxel = FileResponse(open(file_path, 'rb'))
    delete_file = os.remove(file_path)
    return file_ecxel

>> UPDATED download_estimate_excel_file function

@login_required
def download_estimate_excel_file(request, project_id, project_name):
    project_tnc_obj = ProjectTermsAndConditions.objects.filter(
        project=project_id)
    date_time_obj = datetime.now()
    current_date = date_time_obj.strftime('%x')
    current_time = date_time_obj.strftime('%X')

    filename = project_name + '_' + str(current_date).replace('/', "-") + '_' + str(current_time).replace(":", "-") + ".xlsx"

    file_path = "media/excel/" + filename

    ...
    ...

    sheet.append([""])

    workbook.save(filename=str(file_path))
    workbook.close()

    with open(file_path, "rb") as excel:
        data = excel.read()
    delete_file = os.remove(file_path)

    return HttpResponse(data, headers={
        'Content-Type': 'application/vnd.ms-excel',
        'Content-Disposition': 'attachment; filename= "{}"'.format(
            filename),
    })

提前致谢。