ModuleNotFoundError: No module named 'pymongo'

ubuntu@ip-172-31-35-211:~/sparta$ pip install pymongo

Collecting pymongo

 Downloading pymongo-4.2.0-cp38-cp38-manylinux2014_x86_64.whl (506 kB)

   |████████████████████████████████| 506 kB 11.1 MB/s

Installing collected packages: pymongo

Successfully installed pymongo-4.2.0

ubuntu@ip-172-31-35-211:~/sparta$ pip install dnspython

Collecting dnspython

 Downloading dnspython-2.2.1-py3-none-any.whl (269 kB)

   |████████████████████████████████| 269 kB 18.5 MB/s

Installing collected packages: dnspython

Successfully installed dnspython-2.2.1

ubuntu@ip-172-31-35-211:~/sparta$ python app.py

ubuntu@ip-172-31-35-211:~/sparta$ python app.py

ubuntu@ip-172-31-35-211:~/sparta$

여기까지 했는데요

python app.py 를 치면 서버?가 떠야하는데 안뜨네요.. 제가 뭘 잘못한건지 모르겠어요ㅠㅠ

그래서 그런지 배포?한 ip로도 화면이 안뜨네요 ㅠㅠㅠㅠ