我尝试按照this教程部署一个django应用程序，在启动gunicorn时，我使用了以下命令：gunicorn -b 127.0.0.1:8000 wsgi:application，位于我的www.example.com所在的文件夹中wsgi.py。

文件名为wsgi.py

import os

from django.core.wsgi import get_wsgi_application

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

application = get_wsgi_application()

我得到了以下错误：

[2019-07-19 20:54:39 -0300] [7786] [INFO] Starting gunicorn 19.9.0
[2019-07-19 20:54:39 -0300] [7786] [INFO] Listening at: http://127.0.0.1:8000 (7786)
[2019-07-19 20:54:39 -0300] [7786] [INFO] Using worker: sync
[2019-07-19 20:54:39 -0300] [7789] [INFO] Booting worker with pid: 7789
[2019-07-19 20:54:39 -0300] [7789] [ERROR] Exception in worker process
Traceback (most recent call last):
  File "/usr/local/lib/python3.6/dist-packages/gunicorn/arbiter.py", line 583, in spawn_worker
    worker.init_process()
  File "/usr/local/lib/python3.6/dist-packages/gunicorn/workers/base.py", line 129, in init_process
    self.load_wsgi()
  File "/usr/local/lib/python3.6/dist-packages/gunicorn/workers/base.py", line 138, in load_wsgi
    self.wsgi = self.app.wsgi()
  File "/usr/local/lib/python3.6/dist-packages/gunicorn/app/base.py", line 67, in wsgi
    self.callable = self.load()
  File "/usr/local/lib/python3.6/dist-packages/gunicorn/app/wsgiapp.py", line 52, in load
    return self.load_wsgiapp()
  File "/usr/local/lib/python3.6/dist-packages/gunicorn/app/wsgiapp.py", line 41, in load_wsgiapp
    return util.import_app(self.app_uri)
  File "/usr/local/lib/python3.6/dist-packages/gunicorn/util.py", line 350, in import_app
    __import__(module)
  File "/home/ubuntu/renato-sfera/mysite/wsgi.py", line 12, in <module>
    from django.core.wsgi import get_wsgi_application
ModuleNotFoundError: No module named 'django'
[2019-07-19 20:54:39 -0300] [7789] [INFO] Worker exiting (pid: 7789)
[2019-07-19 20:54:39 -0300] [7786] [INFO] Shutting down: Master
[2019-07-19 20:54:39 -0300] [7786] [INFO] Reason: Worker failed to boot.

可能是什么呢？我可以发布解决问题所需的内容