node.jsexpressherokuheroku-cli
Success deploy on Heroku but I get Application Error using Express + Node.JS
This is my first time trying to deploy, and I choose Heroku, please pardon me, and I'm deploying it as a fun project for practice purposes.
I've followed this site instruction to deploy Heroku
And I've successfully deployed it due to what I read on the terminal
-----> Building on the Heroku-20 stack
-----> Using buildpack: heroku/nodejs
-----> Node.js app detected
-----> Creating runtime environment
NPM_CONFIG_LOGLEVEL=error
NODE_VERBOSE=false
NODE_ENV=production
NODE_MODULES_CACHE=true
-----> Installing binaries
engines.node (package.json): unspecified
engines.npm (package.json): unspecified (use default)
Resolving node version 14.x...
Downloading and installing node 14.18.2...
Using default npm version: 6.14.15
-----> Restoring cache
- node_modules
-----> Installing dependencies
Installing node modules
> ejs@2.7.4 postinstall /tmp/build_b0e24fab/node_modules/ejs
> node ./postinstall.js
> fsevents@1.2.13 install /tmp/build_b0e24fab/node_modules/fsevents
> node install.js
Skipping 'fsevents' build as platform linux is not supported
> nodemon@1.18.5 postinstall /tmp/build_b0e24fab/node_modules/nodemon
> node bin/postinstall || exit 0
Love nodemon? You can now support the project via the open collective:
> https://opencollective.com/nodemon/donate
added 458 packages in 4.084s
-----> Build
-----> Caching build
- node_modules
-----> Pruning devDependencies
audited 458 packages in 1.789s
32 packages are looking for funding
run `npm fund` for details
found 4 vulnerabilities (3 moderate, 1 high)
run `npm audit fix` to fix them, or `npm audit` for details
-----> Build succeeded!
-----> Discovering process types
Procfile declares types -> web
-----> Compressing...
Done: 36.7M
-----> Launching...
Released v5
https://kanadb.herokuapp.com/ deployed to Heroku
But when I tried to access that URL that Heroku provide me, it's said Application Error. And I tried to go to the logs to see what happen.
And here's what the logs tell me:
2022-01-06T16:21:23.381226+00:00 app[web.1]: Error: Cannot find module '/app/index.js'
2022-01-06T16:21:23.381226+00:00 app[web.1]: at Function.Module._resolveFilename (internal/modules/cjs/loader.js:902:15)
2022-01-06T16:21:23.381227+00:00 app[web.1]: at Function.Module._load (internal/modules/cjs/loader.js:746:27)
2022-01-06T16:21:23.381227+00:00 app[web.1]: at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:76:12)
2022-01-06T16:21:23.381228+00:00 app[web.1]: at internal/main/run_main_module.js:17:47 {
2022-01-06T16:21:23.381237+00:00 app[web.1]: code: 'MODULE_NOT_FOUND',
2022-01-06T16:21:23.381238+00:00 app[web.1]: requireStack: []
2022-01-06T16:21:23.381238+00:00 app[web.1]: }
2022-01-06T16:21:23.541784+00:00 heroku[web.1]: Process exited with status 1
2022-01-06T16:21:23.625528+00:00 heroku[web.1]: State changed from starting to crashed
2022-01-06T16:32:41.768068+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=kanadb.herokuapp.com request_id=645c04d9-37e3-49d1-9215-7100a50e6ed6 fwd="42.119.203.224" dyno= connect= service= status=503 bytes= protocol=https
2022-01-06T16:32:42.482576+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=kanadb.herokuapp.com request_id=4310b722-24f5-4b2c-98cf-9b7f2d1ab4bb fwd="42.119.203.224" dyno= connect= service= status=503 bytes= protocol=https
Here's my ExpressJS code, it's only do 1 POST route, whenever I click on the items in my Front-end, it'll send an URL down to that POST route and modify that URL to extract the data I need and insert into my Supabase:
var PORT = process.env.PORT || 8000
const axios = require('axios')
const cheerio = require('cheerio')
const express = require('express')
const app = express()
const { createClient } = require('@supabase/supabase-js')
const supabase = createClient(
'mySupabaseURL',
'myAnonAPIKey'
)
let cors = require('cors')
app.use(cors({
origin: 'http://localhost:3000',
credentials: true
}))
app.use(express.static("public"))
app.use(express.json())
app.use(express.urlencoded({extended: true}))
app.post('/', async function (req, res, next) {
let animeData = []
res.status(201).json({message: 'success'})
let basedURL = req.body
await axios(basedURL.animeURL)
.then(async response =>{
let html = response.data
let $ = cheerio.load(html, {xmlMode: true})
$('script', html).each(function(){
let animeEpisode = $(this).text()
animeData.push({
animeEpisode
})
})
let result = Object.entries(animeData[15])
let stringResult = result[0].toString()
let arrayResult = stringResult.split(",")
for(let i = 0; i<arrayResult.length; i++){
let fboLink2 = arrayResult[i]
let location = fboLink2.indexOf(`source_fbo: [{"file":"`)
if(location != -1){
let newFBO = fboLink2.replace(`source_fbo: [{"file":"`, "")
let finalFBO = newFBO.replace(`"}]`, "")
const {data} = await supabase
.from('anime_detail')
.update({anime_video: finalFBO})
.match({anime_title: basedURL.animeTitle, anime_url: basedURL.animeURL, anime_episode: basedURL.anime_episode})
}
}
}).catch(err => console.log(err))
})
app.listen(PORT, ()=> {console.log(`Server is running`)})
Everything is working fine for me when I ran locally both Node.JS + Express and my Front-end, so I don't know what caused the problem.
This is my structure, and I've inserted the Procfile with web: node index.js, too.
Update 1:
After fixing the Procfile with web: node ./src/index.js, the error that requires the index.js is fixed, but it lead me to another problem that I really don't know how to fix with.
Here's the log of it:
2022-01-06T19:22:51.002284+00:00 app[web.1]: internal/modules/cjs/loader.js:905
2022-01-06T19:22:51.002303+00:00 app[web.1]: throw err;
2022-01-06T19:22:51.002304+00:00 app[web.1]: ^
2022-01-06T19:22:51.002304+00:00 app[web.1]:
2022-01-06T19:22:51.002304+00:00 app[web.1]: Error: Cannot find module '@supabase/supabase-js'
2022-01-06T19:22:51.002304+00:00 app[web.1]: Require stack:
2022-01-06T19:22:51.002305+00:00 app[web.1]: - /app/src/index.js
2022-01-06T19:22:51.002305+00:00 app[web.1]: at Function.Module._resolveFilename (internal/modules/cjs/loader.js:902:15)
2022-01-06T19:22:51.002306+00:00 app[web.1]: at Function.Module._load (internal/modules/cjs/loader.js:746:27)
2022-01-06T19:22:51.002306+00:00 app[web.1]: at Module.require (internal/modules/cjs/loader.js:974:19)
2022-01-06T19:22:51.002306+00:00 app[web.1]: at require (internal/modules/cjs/helpers.js:93:18)
2022-01-06T19:22:51.002306+00:00 app[web.1]: at Object.<anonymous> (/app/src/index.js:9:26)
2022-01-06T19:22:51.002307+00:00 app[web.1]: at Module._compile (internal/modules/cjs/loader.js:1085:14)
2022-01-06T19:22:51.002307+00:00 app[web.1]: at Object.Module._extensions..js (internal/modules/cjs/loader.js:1114:10)
2022-01-06T19:22:51.002308+00:00 app[web.1]: at Module.load (internal/modules/cjs/loader.js:950:32)
2022-01-06T19:22:51.002308+00:00 app[web.1]: at Function.Module._load (internal/modules/cjs/loader.js:790:12)
2022-01-06T19:22:51.002308+00:00 app[web.1]: at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:76:12) {
2022-01-06T19:22:51.002309+00:00 app[web.1]: code: 'MODULE_NOT_FOUND',
2022-01-06T19:22:51.002309+00:00 app[web.1]: requireStack: [ '/app/src/index.js' ]
2022-01-06T19:22:51.002309+00:00 app[web.1]: }
2022-01-06T19:22:51.275795+00:00 heroku[web.1]: State changed from starting to crashed
2022-01-06T19:22:48.000000+00:00 app[api]: Build succeeded
Solution
Heroku can't find your index.js file:
Error: Cannot find module '/app/index.js'
It looks like your index.js is inside a directory called src/. That should be reflected in your Procfile:
web: node src/index.js
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