背景
我正在尝试在GitHub：https://github.com/delitamakanda/treelo上执行类似Trello的程序。
GitHub上的README.md文件没有写得很详细， 因此，如果您能向我解释在浏览器上运行它，我将不胜感激。
问题
使用以下命令和环境设置失败。
http://127.0.0.1:5000/上的错误消息
Not Found
The requested URL was not found on the server.
If you entered the URL manually please check your spelling and try again.
执行命令
$ flaSK_APP=manage.py flaSK_DEBUG=true flask run
终端响应
127.0.0.1 - - [04/Nov/2019 11:43:03] "GET / HTTP/1.1" 404 -
127.0.0.1 - - [04/Nov/2019 11:43:03] "GET /favicon.ico HTTP/1.1" 404 -
我做什么
在treelo-master文件夹中，我在Terminal上执行了以下命令，并成功创建了带有requirements.txt的虚拟环境。
$ python3 -m venv env
$ source env/bin/activate
pip install -r requirements.txt
响应
Installing collected packages: SQLAlchemy,MarkupSafe,Mako,python-editor,six,python-dateutil,alembic,aniso8601,click,Jinja2,itsdangerous,Werkzeug,flask,flask-Cors,flask-SQLAlchemy,flask-Migrate,pytz,flask-RESTful,flask-script
Running setup.py install for SQLAlchemy ... done
Running setup.py install for MarkupSafe ... done
Running setup.py install for Mako ... done
Running setup.py install for python-editor ... done
Running setup.py install for alembic ... done
Running setup.py install for itsdangerous ... done
Running setup.py install for flask-script ... done
Successfully installed flask-1.0 flask-Cors-3.0.4 flask-Migrate-2.1.1 flask-RESTful-0.3.6
flask-SQLAlchemy-2.3.2 flask-script-2.0.6 Jinja2-2.10.1 Mako-1.0.7 MarkupSafe-1.0
SQLAlchemy-1.3.0 Werkzeug-0.15.3 alembic-0.9.9 aniso8601-3.0.0 click-6.7
itsdangerous-0.24 python-dateutil-2.7.3 python-editor-1.0.3 pytz-2018.4 six-1.11.0