Neo4j-flask - py2neo Heroku deployment issue -

i've followed nicole white's tutorial http://nicolewhite.github.io/neo4j-flask/

everything worked locally, then, deployment on heroku i'm unable open app. following error:

2016-08-08t23:49:58.194942+00:00 app[web.1]:   file "run.py", line 1, in <module> 2016-08-08t23:49:58.194985+00:00 app[web.1]:     blog import app 2016-08-08t23:49:58.195012+00:00 app[web.1]:   file "/app/blog/__init__.py", line 1, in <module> 2016-08-08t23:49:58.195054+00:00 app[web.1]:     .views import app 2016-08-08t23:49:58.195118+00:00 app[web.1]:     .models import user, get_todays_recent_posts 2016-08-08t23:49:58.194942+00:00 app[web.1]:   file "run.py", line 1, in <module> 2016-08-08t23:49:58.195012+00:00 app[web.1]:   file "/app/blog/__init__.py", line 1, in <module> 2016-08-08t23:49:58.195054+00:00 app[web.1]:     .views import app 2016-08-08t23:49:58.195118+00:00 app[web.1]:     .models import user, get_todays_recent_posts 2016-08-08t23:49:58.195184+00:00 app[web.1]:     py2neo import graph, node, relationship, serviceroot 2016-08-08t23:49:58.272878+00:00 heroku[web.1]: process exited status 1 

my run.py is:

from blog import app import os  port = int(os.environ.get('port', 5000)) app.secret_key = os.urandom(24) app.run(host='0.0.0.0', port=port) 

the header of models.py is:

from py2neo import graph, node, relationship, serviceroot passlib.hash import bcrypt datetime import datetime import os import uuid  graphenedb_url = os.environ.get("graphenedb_url", "http://localhost:7474/") graph = serviceroot(graphenedb_url).graph 

the header of views.py is:

from .models import user, get_todays_recent_posts flask import flask, request, session, redirect, url_for, render_template, flash  app = flask(__name__) 

i hope me on this.