flask 기본 예제 실행이 안될 때 (에러메세지도 안뜨는 경우)

flask.palletsprojects.com/en/1.1.x/quickstart/#a-minimal-application Quickstart — Flask Documentation (1.1.x) For web applications it’s crucial to react to the data a client sends to the server. In Flask this information is provided by the global request object.

If you have some experience with Python you might be wondering how that object can be global and how flask.palletsprojects.com 위 링크의 기본.....