Node.js app not opening after deploy to Heroku

Question

I've gone through a number of revisions in my code, and have read various conflicting blog posts on similar issues. App opens locally correctly.

Additional steps I've taken:

• Cleared and re-added nodejs buildpackm Scaled the app according to Heroku docs (heroku ps:scale web=0) (heroku ps:scale web=1), restarted the heroku app. Finally, I've used the following answers to similar questions:

Error while deploying Node.js App to Heroku

Heroku is giving me a 503 when trying to open my web app, works on local host

npm ERR! npm owner error triggered with H10 app crashed

In my opinion, the significant error from logs is: "heroku[router]: at=error code=H10 desc="App crashed".

Any guidance would be greatly appreciated.

Heroku logs:

macs-iMac:hooptime mac$ heroku logs
2017-07-27T03:13:32.290426+00:00 app[web.1]: Available on:
2017-07-27T03:13:32.291372+00:00 app[web.1]:   http://localhost:8000
2017-07-27T03:13:32.291437+00:00 app[web.1]: Hit CTRL-C to stop the server
2017-07-27T03:14:24.468772+00:00 heroku[web.1]: State changed from starting to crashed
2017-07-27T03:14:24.329875+00:00 heroku[web.1]: Error R10 (Boot timeout) -> Web process failed to bind to $PORT within 60 seconds of launch
2017-07-27T03:14:24.329968+00:00 heroku[web.1]: Stopping process with SIGKILL
2017-07-27T03:14:24.452131+00:00 heroku[web.1]: Process exited with status 137
2017-07-27T03:17:53.555938+00:00 heroku[worker.1]: State changed from crashed to starting
2017-07-27T03:17:58.615372+00:00 heroku[worker.1]: Starting process with command `node index.js`
2017-07-27T03:17:59.234914+00:00 heroku[worker.1]: State changed from starting to up
2017-07-27T03:18:01.127773+00:00 heroku[worker.1]: State changed from up to crashed
2017-07-27T03:18:01.028085+00:00 app[worker.1]: module.js:471
2017-07-27T03:18:01.028104+00:00 app[worker.1]:     throw err;
2017-07-27T03:18:01.028105+00:00 app[worker.1]:     ^
2017-07-27T03:18:01.028105+00:00 app[worker.1]: 
2017-07-27T03:18:01.028112+00:00 app[worker.1]: Error: Cannot find module '/app/index.js'
2017-07-27T03:18:01.028121+00:00 app[worker.1]:     at Function.Module._resolveFilename (module.js:469:15)
2017-07-27T03:18:01.028122+00:00 app[worker.1]:     at Function.Module._load (module.js:417:25)
2017-07-27T03:18:01.028123+00:00 app[worker.1]:     at Module.runMain (module.js:604:10)
2017-07-27T03:18:01.028123+00:00 app[worker.1]:     at run (bootstrap_node.js:389:7)
2017-07-27T03:18:01.028124+00:00 app[worker.1]:     at startup (bootstrap_node.js:149:9)
2017-07-27T03:18:01.028125+00:00 app[worker.1]:     at bootstrap_node.js:504:3
2017-07-27T03:18:01.111007+00:00 heroku[worker.1]: Process exited with status 1
2017-07-27T03:32:56.591479+00:00 heroku[worker.1]: State changed from crashed to starting
2017-07-27T03:33:00.576960+00:00 heroku[worker.1]: Starting process with command `node index.js`
2017-07-27T03:33:01.200876+00:00 heroku[worker.1]: State changed from starting to up
2017-07-27T03:33:02.638384+00:00 app[worker.1]: module.js:471
2017-07-27T03:33:02.638400+00:00 app[worker.1]:     throw err;
2017-07-27T03:33:02.638401+00:00 app[worker.1]:     ^
2017-07-27T03:33:02.638402+00:00 app[worker.1]: 
2017-07-27T03:33:02.638402+00:00 app[worker.1]: Error: Cannot find module '/app/index.js'
2017-07-27T03:33:02.638415+00:00 app[worker.1]:     at Function.Module._resolveFilename (module.js:469:15)
2017-07-27T03:33:02.638415+00:00 app[worker.1]:     at Function.Module._load (module.js:417:25)
2017-07-27T03:33:02.638416+00:00 app[worker.1]:     at Module.runMain (module.js:604:10)
2017-07-27T03:33:02.638417+00:00 app[worker.1]:     at run (bootstrap_node.js:389:7)
2017-07-27T03:33:02.638417+00:00 app[worker.1]:     at startup (bootstrap_node.js:149:9)
2017-07-27T03:33:02.638418+00:00 app[worker.1]:     at bootstrap_node.js:504:3
2017-07-27T03:33:02.769228+00:00 heroku[worker.1]: Process exited with status 1
2017-07-27T03:33:02.782955+00:00 heroku[worker.1]: State changed from up to crashed
2017-07-27T03:36:58.088482+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=hooptime.herokuapp.com request_id=04c12935-8d88-470d-9e54-4b45e2480d67 fwd="66.205.150.33" dyno= connect= service= status=503 bytes= protocol=https
2017-07-27T03:48:00.556550+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=hooptime.herokuapp.com request_id=270fea8f-75fe-4078-8c01-c8779e5c43cb fwd="66.205.150.33" dyno= connect= service= status=503 bytes= protocol=https
2017-07-27T03:48:12.960183+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=hooptime.herokuapp.com request_id=d31437be-fe7e-4e56-a0db-a13a8e3a28af fwd="66.205.150.33" dyno= connect= service= status=503 bytes= protocol=https
2017-07-27T03:48:13.804392+00:00 heroku[worker.1]: State changed from crashed to starting
2017-07-27T03:48:14.158976+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=hooptime.herokuapp.com request_id=d9cdb0e6-ab58-442f-b35b-87e72ae2cc18 fwd="66.205.150.33" dyno= connect= service= status=503 bytes= protocol=https
2017-07-27T03:48:14.505616+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/apple-touch-icon-precomposed.png" host=hooptime.herokuapp.com request_id=de46bfff-578e-4e5e-be86-c51b58b4af54 fwd="66.205.150.33" dyno= connect= service= status=503 bytes= protocol=https
2017-07-27T03:48:14.661681+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=hooptime.herokuapp.com request_id=e51259a7-0979-412d-8f93-b571e28875ef fwd="66.205.150.33" dyno= connect= service= status=503 bytes= protocol=https
2017-07-27T03:48:14.743144+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/apple-touch-icon.png" host=hooptime.herokuapp.com request_id=fb7cd369-d821-44a1-bf30-5e378f1810fb fwd="66.205.150.33" dyno= connect= service= status=503 bytes= protocol=https
2017-07-27T03:48:15.011171+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=hooptime.herokuapp.com request_id=82649af8-1b1c-4215-827b-41af4d827500 fwd="66.205.150.33" dyno= connect= service= status=503 bytes= protocol=https
2017-07-27T03:48:15.276467+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/apple-touch-icon-precomposed.png" host=hooptime.herokuapp.com request_id=fe831747-d46d-4ae2-9475-64bed439abb3 fwd="66.205.150.33" dyno= connect= service= status=503 bytes= protocol=https
2017-07-27T03:48:15.599565+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/apple-touch-icon.png" host=hooptime.herokuapp.com request_id=7e6fd0fa-efc7-40b6-b2da-125673765285 fwd="66.205.150.33" dyno= connect= service= status=503 bytes= protocol=https
2017-07-27T03:48:17.042432+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=hooptime.herokuapp.com request_id=4b51a77b-ae59-4583-b386-526f0a501c68 fwd="66.205.150.33" dyno= connect= service= status=503 bytes= protocol=https
2017-07-27T03:48:17.149974+00:00 heroku[worker.1]: Starting process with command `node index.js`
2017-07-27T03:48:17.380527+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=hooptime.herokuapp.com request_id=73136e3a-46b7-4c92-9f2a-d581d3c72738 fwd="66.205.150.33" dyno= connect= service= status=503 bytes= protocol=https
2017-07-27T03:48:17.829826+00:00 heroku[worker.1]: State changed from starting to up
2017-07-27T03:48:19.457599+00:00 app[worker.1]: module.js:471
2017-07-27T03:48:19.457612+00:00 app[worker.1]:     throw err;
2017-07-27T03:48:19.457612+00:00 app[worker.1]:     ^
2017-07-27T03:48:19.457613+00:00 app[worker.1]: 
2017-07-27T03:48:19.457614+00:00 app[worker.1]: Error: Cannot find module '/app/index.js'
2017-07-27T03:48:19.457615+00:00 app[worker.1]:     at Function.Module._load (module.js:417:25)
2017-07-27T03:48:19.457614+00:00 app[worker.1]:     at Function.Module._resolveFilename (module.js:469:15)
2017-07-27T03:48:19.457616+00:00 app[worker.1]:     at Module.runMain (module.js:604:10)
2017-07-27T03:48:19.457616+00:00 app[worker.1]:     at run (bootstrap_node.js:389:7)
2017-07-27T03:48:19.457618+00:00 app[worker.1]:     at bootstrap_node.js:504:3
2017-07-27T03:48:19.457617+00:00 app[worker.1]:     at startup (bootstrap_node.js:149:9)
2017-07-27T03:48:19.568292+00:00 heroku[worker.1]: Process exited with status 1
2017-07-27T03:48:19.582653+00:00 heroku[worker.1]: State changed from up to crashed
2017-07-27T03:53:32.129097+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=hooptime.herokuapp.com request_id=70af7304-5591-4cff-9fc7-25c309e6df5b fwd="66.205.150.33" dyno= connect= service= status=503 bytes= protocol=https
2017-07-27T03:53:32.359600+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=hooptime.herokuapp.com request_id=13b24996-5231-46ce-bf16-0917f438d67c fwd="66.205.150.33" dyno= connect= service= status=503 bytes= protocol=https
2017-07-27T03:54:22.676504+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=hooptime.herokuapp.com request_id=1b37ef83-7165-4f51-8028-e6e7c9223c30 fwd="66.205.150.33" dyno= connect= service= status=503 bytes= protocol=https
2017-07-27T03:54:22.902471+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=hooptime.herokuapp.com request_id=bab64ebe-b273-4b57-94e9-c795833e0f68 fwd="66.205.150.33" dyno= connect= service= status=503 bytes= protocol=https
2017-07-27T03:56:00.492646+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=hooptime.herokuapp.com request_id=4bb60171-35b7-4fe0-afd9-f4c43d4357b9 fwd="66.205.150.33" dyno= connect= service= status=503 bytes= protocol=https
2017-07-27T03:56:00.721576+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=hooptime.herokuapp.com request_id=2dee01f7-5392-40b5-b9d2-38178f32e698 fwd="66.205.150.33" dyno= connect= service= status=503 bytes= protocol=https
2017-07-27T03:56:02.052904+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=hooptime.herokuapp.com request_id=15afa6fc-8216-48f9-a637-92c82506b4ce fwd="66.205.150.33" dyno= connect= service= status=503 bytes= protocol=https
2017-07-27T03:56:02.265575+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=hooptime.herokuapp.com request_id=998e5185-b367-4121-9bdc-5673d37deeff fwd="66.205.150.33" dyno= connect= service= status=503 bytes= protocol=https
2017-07-27T03:57:27.796870+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=hooptime.herokuapp.com request_id=e753734d-79ed-4c36-8e6f-08e591edafee fwd="66.205.150.33" dyno= connect= service= status=503 bytes= protocol=https
2017-07-27T03:57:28.036446+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=hooptime.herokuapp.com request_id=e0147f98-9f83-4c51-a6c8-cb3d9c46c47b fwd="66.205.150.33" dyno= connect= service= status=503 bytes= protocol=https
2017-07-27T03:58:30.003002+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=hooptime.herokuapp.com request_id=00c1688f-740f-4cbf-9d0d-cc6c25d23cf4 fwd="66.205.150.33" dyno= connect= service= status=503 bytes= protocol=https
2017-07-27T03:58:30.226148+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=hooptime.herokuapp.com request_id=c7c59508-0d33-4e98-b2a3-4c8ebfd8529f fwd="66.205.150.33" dyno= connect= service= status=503 bytes= protocol=https
2017-07-27T03:58:30.878029+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=hooptime.herokuapp.com request_id=ec7d5038-82eb-4c12-aed6-0488401f7a9e fwd="66.205.150.33" dyno= connect= service= status=503 bytes= protocol=https
2017-07-27T03:58:31.085787+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=hooptime.herokuapp.com request_id=15f39eec-de96-48f0-8f6b-575cd688ba91 fwd="66.205.150.33" dyno= connect= service= status=503 bytes= protocol=https
2017-07-27T04:02:16.853379+00:00 heroku[worker.1]: State changed from crashed to starting
2017-07-27T04:02:21.100226+00:00 heroku[worker.1]: Starting process with command `node index.js`
2017-07-27T04:02:21.727262+00:00 heroku[worker.1]: State changed from starting to up
2017-07-27T04:02:23.099454+00:00 app[worker.1]: module.js:471
2017-07-27T04:02:23.099481+00:00 app[worker.1]:     throw err;
2017-07-27T04:02:23.099482+00:00 app[worker.1]:     ^
2017-07-27T04:02:23.099482+00:00 app[worker.1]: 
2017-07-27T04:02:23.099484+00:00 app[worker.1]:     at Function.Module._resolveFilename (module.js:469:15)
2017-07-27T04:02:23.099483+00:00 app[worker.1]: Error: Cannot find module '/app/index.js'
2017-07-27T04:02:23.099485+00:00 app[worker.1]:     at Function.Module._load (module.js:417:25)
2017-07-27T04:02:23.099485+00:00 app[worker.1]:     at Module.runMain (module.js:604:10)
2017-07-27T04:02:23.099486+00:00 app[worker.1]:     at run (bootstrap_node.js:389:7)
2017-07-27T04:02:23.099486+00:00 app[worker.1]:     at startup (bootstrap_node.js:149:9)
2017-07-27T04:02:23.099487+00:00 app[worker.1]:     at bootstrap_node.js:504:3
2017-07-27T04:02:23.189149+00:00 heroku[worker.1]: Process exited with status 1
2017-07-27T04:02:23.199937+00:00 heroku[worker.1]: State changed from up to crashed
2017-07-27T04:03:40.500129+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=hooptime.herokuapp.com request_id=e1058a8e-46a1-4372-a702-f616540f792a fwd="66.205.150.33" dyno= connect= service= status=503 bytes= protocol=https
2017-07-27T04:03:40.730673+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=hooptime.herokuapp.com request_id=3ffc8109-d893-43fc-8478-132ef1744a3d fwd="66.205.150.33" dyno= connect= service= status=503 bytes= protocol=https
2017-07-27T04:03:41.990804+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=hooptime.herokuapp.com request_id=fd31d62c-c0f9-4acc-b72c-3d80d1d0d362 fwd="66.205.150.33" dyno= connect= service= status=503 bytes= protocol=https
2017-07-27T04:03:42.209388+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=hooptime.herokuapp.com request_id=5b07975b-ffe1-43e6-8d72-7acf905d4bf2 fwd="66.205.150.33" dyno= connect= service= status=503 bytes= protocol=https
macs-iMac:hooptime mac$ 

Procfile:

worker: node index.js

package.json:

        {
  "name": "hooptime",
  "description": "Our sample Node to Heroku app",
  "engines": { "node": "7.1.0"},
  "main": "server.js",
  "scripts": {
    "start": "node server.js"
  },
  "dependencies": {
    "express": "~4.9.8"
  }
}

index.js:

     var express = require('express');
var bodyParser = require('body-parser');

var app = express();

app.set('port', (process.env.PORT || 8080));
app.use(express.static(__dirname + '/app'));
app.set('views', __dirname + '/app/parks/');
app.engine('html', require('ejs').renderFile);
app.set('view engine', 'html');

app.use(bodyParser.urlencoded({
  extended: true
}));
app.use(bodyParser.json());

app.get('*', function(req, res){
    res.render('register.view.html');
});

app.listen(app.get('port'), function() {
});

Answer 1

In your Procfile you defined worker as

worker: node index.js

But your main file is named server.js so you should define Procfile as

worker: node server.js