A new Django project is created, but the webpage won't open 127.0.0.1:8000

On the command line:
CD Project directory
Python manage.py makemigrations
Python manage.py Migrate
This is because the settings of the project need to build a database table before it can be applied to your project.
So if there is no way to run the server, you may have forgotten to run the two commands first.
After the table is established,
Python manage.py Runserver can

If you use Pycharm, you can use the Ctrl+alt+r input command

A new Django project is created, but the webpage won't open 127.0.0.1:8000