New to Flask

[vj78]

The code below displays hello

@app.route('/')
@app.route('/Login')
def Login():
    return "hello"

The below does not work:

@app.route('/')
@app.route('/Login')
def Login():
    return render_template("Login.html")

[snippsat]

Look at setup here.
Also show your folder setup,usually /Login should be own route.
Also like /about route show in basic setup in link.