I'm building an app and I've gotten to the point where deployment to HEROKU was successful. On opening app(/), I get APPLICATION ERROR, I checked log with CLI mand and this is what I get:
2018-10-22T09:06:32.000000+00:00 app[api]: Build started by user [email protected]
2018-10-22T09:06:45.572183+00:00 app[api]: Deploy 7bc663ae by user [email protected]
2018-10-22T09:06:45.572183+00:00 app[api]: Release v24 created by user [email protected]
2018-10-22T09:06:45.826688+00:00 heroku[web.1]: State changed from crashed to starting
2018-10-22T09:06:47.000000+00:00 app[api]: Build succeeded
2018-10-22T09:06:49.116924+00:00 heroku[web.1]: Starting process with mand `npm start`
2018-10-22T09:06:53.099327+00:00 app[web.1]:
2018-10-22T09:06:53.099345+00:00 app[web.1]: > [email protected] start /app
2018-10-22T09:06:53.099347+00:00 app[web.1]: > node index.js
2018-10-22T09:06:53.099349+00:00 app[web.1]:
2018-10-22T09:06:53.840102+00:00 heroku[web.1]: Process exited with status 0
2018-10-22T09:06:53.856482+00:00 heroku[web.1]: State changed from starting to crashed
2018-10-22T09:06:53.858384+00:00 heroku[web.1]: State changed from crashed to starting
2018-10-22T09:06:57.152906+00:00 heroku[web.1]: Starting process with mand `npm start`
2018-10-22T09:07:00.298331+00:00 app[web.1]:
2018-10-22T09:07:00.298348+00:00 app[web.1]: > [email protected] start /app
2018-10-22T09:07:00.298350+00:00 app[web.1]: > node index.js
2018-10-22T09:07:00.298351+00:00 app[web.1]:
2018-10-22T09:07:00.979144+00:00 heroku[web.1]: Process exited with status 0
2018-10-22T09:07:00.997278+00:00 heroku[web.1]: State changed from starting to crashed
2018-10-22T09:07:20.183091+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=odm-mobile.herokuapp request_id=c9a8b164-2f61-459b-87da-56518ce4dc81 fwd="154.120.97.254" dyno= connect= service= status=503 bytes= protocol=https
2018-10-22T09:07:22.293716+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=odm-mobile.herokuapp request_id=6870b281-7607-4882-8bac-e97c38169e26 fwd="154.120.97.254" dyno= connect= service= status=503 bytes= protocol=https
2018-10-22T09:25:14.164205+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=odm-mobile.herokuapp request_id=af0d9ab3-8a64-494e-8b2e-4b5e0a46f7fd fwd="154.120.97.254" dyno= connect= service= status=503 bytes= protocol=https
2018-10-22T09:25:15.783603+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=odm-mobile.herokuapp request_id=dcd6cc6f-0959-4ca7-b4d4-43143e952b8c fwd="154.120.97.254" dyno= connect= service= status=503 bytes= protocol=https`
The following are the files that I'm working with on dreamweaver
index.js
var port = Number(process.env.PORT|| 5000); var express = require('express'), moment = require('moment'); var exports = module.exports = function(dir, options) { var modules = {}; options = merge(options || {}, { lazy: true }); fs.readdirSync(dir).forEach(function(filename) { // filter index and dotfiles if (filename !== 'index.js' && filename[0] !== '.') { var moduleName = path.basename(filename, path.extname(filename)); var modulePath = path.join(dir, moduleName); // lazy load if (options.lazy) { Object.defineProperty(modules, moduleName, { get: function() { return require(modulePath); } }); } else { modules[moduleName] = require(modulePath); } } }); return modules; };I'm building an app and I've gotten to the point where deployment to HEROKU was successful. On opening app(https://odm-mobile.herokuapp./), I get APPLICATION ERROR, I checked log with CLI mand and this is what I get:
2018-10-22T09:06:32.000000+00:00 app[api]: Build started by user [email protected] 2018-10-22T09:06:45.572183+00:00 app[api]: Deploy 7bc663ae by user [email protected] 2018-10-22T09:06:45.572183+00:00 app[api]: Release v24 created by user [email protected] 2018-10-22T09:06:45.826688+00:00 heroku[web.1]: State changed from crashed to starting 2018-10-22T09:06:47.000000+00:00 app[api]: Build succeeded 2018-10-22T09:06:49.116924+00:00 heroku[web.1]: Starting process with mand `npm start` 2018-10-22T09:06:53.099327+00:00 app[web.1]: 2018-10-22T09:06:53.099345+00:00 app[web.1]: > [email protected] start /app 2018-10-22T09:06:53.099347+00:00 app[web.1]: > node index.js 2018-10-22T09:06:53.099349+00:00 app[web.1]: 2018-10-22T09:06:53.840102+00:00 heroku[web.1]: Process exited with status 0 2018-10-22T09:06:53.856482+00:00 heroku[web.1]: State changed from starting to crashed 2018-10-22T09:06:53.858384+00:00 heroku[web.1]: State changed from crashed to starting 2018-10-22T09:06:57.152906+00:00 heroku[web.1]: Starting process with mand `npm start` 2018-10-22T09:07:00.298331+00:00 app[web.1]: 2018-10-22T09:07:00.298348+00:00 app[web.1]: > [email protected] start /app 2018-10-22T09:07:00.298350+00:00 app[web.1]: > node index.js 2018-10-22T09:07:00.298351+00:00 app[web.1]: 2018-10-22T09:07:00.979144+00:00 heroku[web.1]: Process exited with status 0 2018-10-22T09:07:00.997278+00:00 heroku[web.1]: State changed from starting to crashed 2018-10-22T09:07:20.183091+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=odm-mobile.herokuapp. request_id=c9a8b164-2f61-459b-87da-56518ce4dc81 fwd="154.120.97.254" dyno= connect= service= status=503 bytes= protocol=https 2018-10-22T09:07:22.293716+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=odm-mobile.herokuapp. request_id=6870b281-7607-4882-8bac-e97c38169e26 fwd="154.120.97.254" dyno= connect= service= status=503 bytes= protocol=https 2018-10-22T09:25:14.164205+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=odm-mobile.herokuapp. request_id=af0d9ab3-8a64-494e-8b2e-4b5e0a46f7fd fwd="154.120.97.254" dyno= connect= service= status=503 bytes= protocol=https 2018-10-22T09:25:15.783603+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=odm-mobile.herokuapp. request_id=dcd6cc6f-0959-4ca7-b4d4-43143e952b8c fwd="154.120.97.254" dyno= connect= service= status=503 bytes= protocol=https`The following are the files that I'm working with on dreamweaver
index.js
var port = Number(process.env.PORT|| 5000); var express = require('express'), moment = require('moment'); var exports = module.exports = function(dir, options) { var modules = {}; options = merge(options || {}, { lazy: true }); fs.readdirSync(dir).forEach(function(filename) { // filter index and dotfiles if (filename !== 'index.js' && filename[0] !== '.') { var moduleName = path.basename(filename, path.extname(filename)); var modulePath = path.join(dir, moduleName); // lazy load if (options.lazy) { Object.defineProperty(modules, moduleName, { get: function() { return require(modulePath); } }); } else { modules[moduleName] = require(modulePath); } } }); return modules; };package.json
{ "name": "odm-mobile", "version": "1.0.0", "description": "odm daily devotional", "main": "index.js", "scripts": { "start": "node index.js" }, "keywords": [], "author": "xdoshent <[email protected]>", "license": "MIT", "repository": { "type": "git", "url": "odm-mobile" }, "dependencies": { "@fortawesome/fontawesome-free": "^5.4.1", "express": "^4.16.4", "index.js": "0.0.3", "moment": "^2.22.2", "packages": "0.0.8" }, "engines": { "node": "8.12.0", "engines": { "npm": "6.4.1" } } }Procfile
web: node index.js
Pls clearly point out the issues I might be having and errors in the files I'm working with as I'm new to all these
Share Improve this question asked Oct 22, 2018 at 11:11 X-Dosh EntertainmentX-Dosh Entertainment 311 gold badge1 silver badge2 bronze badges 02 Answers
Reset to default 3Heroku isn't a FaaS service, it's a PaaS. I see that you've exported a function, but it ends there. Ensure that you're running a long-running application i.e. daemon. As stated clearly in logs, your application doesn't wait for anything and directly exits with return code
0which indicates that the program has finished execution successfully. I'm not a Node.js developer but having a look at the Hello World example by ExpressJS will most likely help you understand why things didn't work this time.https://expressjs./en/starter/hello-world.html
app.listen(port, () => console.log(`Example app listening on port ${port}!`))This line does the work in the code snippet by ExpressJS. It starts listening to ining connections, so it blocks forever until killed and accepts connections.
Case 1: Procfile
in Procfile there should be no spaces betweenweb:andnode index.js.- incorrect:
web: node index.js - correct:
web:node index.js
Case 2: devDependency
There should not be any dev dependencies on the server, as heroku didn't install devDependencies by default. So either changedevDependenciestodependenciesin your package.json, or run:heroku config:set NPM_CONFIG_PRODUCTION=false