Need help flask-ngrok in colab not working anymore?

Question

Need help flask-ngrok in colab not working anymore ?

!pip install flask-ngrok -q

from flask_ngrok import run_with_ngrok
from flask import Flask

app = Flask(__name__)
run_with_ngrok(app)

@app.route("/")
def home():
    return "hello api"
  
app.run()

output

Tunnel xxxxxxxxxxxx.ngrok.io not found

Thank You