I was starting a simple Flask app and successfully hosted it locally at port 5000.

However, I couldn't set up a tunnel to a public url via ngrok.

Here are my codes:

app = Flask(__name__)

@app.route("/")
def hello_world():
    return "<p>Hello, World!!</p>"

if __name__ == '__main__':
    app.run(debug=True)

My local host is showing "Hello World!!" normally but clicking on the ngrok page shows this: