输入gunicron -w4 -b0.0.0.0:8000 myapp:app后，通不过。

(venv) ubuntu@VM-16-2-ubuntu:~/myproject$ gunicron -w4 -b0.0.0.0:8000 myapp:app

Command 'gunicron' not found, did you mean:

command 'gunicorn' from deb gunicorn (20.0.4-3)

Try: sudo apt install