MONGO_URI problem

[Gurdit Singh Bedi]

from flask import Flask, render_template
from flask_pymongo import PyMongo
import random


app = Flask(__name__)
mongo = PyMongo(app)
app.config['MONGO_URI'] = 'mongodb://username:[e-mail]:55819/somedb'

@app.route('/chat/reply')
def chatReply():
    a = "lorem ipsum"
    a = mongo.db.Test1.count()
    return (str(a))

I using a mongo db at mlab. I have connected it using a flask app , it contains a collection Test1.
I have the MONGO_URI settings has shown above... but i m still getting this error.

pymongo.errors.ServerSelectionTimeoutError: localhost:27017: [Errno 111] Connection refused

[Dan Crosta]

Out of curiosity, what was the issue here?