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npm build error when deploying app ( digital ocean in client folder )

I am trying to deploy my app but when my server folder and client is done completely and i do npm install and then i do "npm run build" this is what i am getting i dont know why this is happening because i have never seen this type of error and this is so annoying at the last times.
I can provide my Package.Json too for the client folder.
These are the logs
npm run build
> client#1.0.0 build
> next build
info - Loaded env from /home/ibraradmin/client/.env.local
info - Using webpack 5. Reason: Enabled by default https://nextjs.org/docs/messages/webpack5
warn - Detected next.config.js, no exported configuration found. https://nextjs.org/docs/messages/empty-configuration
info - Checking validity of types
warn - No ESLint configuration detected. Run next lint to begin setup
> Build error occurred
Error: > Build directory is not writeable. https://nextjs.org/docs/messages/build-dir-not-writeable
at /home/ibraradmin/client/node_modules/next/dist/build/index.js:275:19
at async Span.traceAsyncFn (/home/ibraradmin/client/node_modules/next/dist/telemetry/trace/trace.js:60:20)
at async Object.build [as default] (/home/ibraradmin/client/node_modules/next/dist/build/index.js:77:25)
info - Creating an optimized production build
This is the package.json
{
"name": "client",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"dev": "node server.js",
"build": "next build",
"start": "next start",
"lint": "next lint"
},
"author": "Xidas Studios",
"license": "MIT",
"dependencies": {
"#ant-design/icons": "^4.6.4",
"#emotion/react": "^11.4.1",
"#emotion/styled": "^11.3.0",
"#material-ui/icons": "^4.11.2",
"#mui/material": "^5.0.0",
"#stripe/stripe-js": "^1.20.3",
"antd": "^4.16.13",
"axios": "^0.21.4",
"axois": "^0.0.1-security",
"bootstrap": "^5.1.1",
"express": "^4.17.1",
"fs": "^0.0.1-security",
"http-proxy-middleware": "^2.0.1",
"install": "^0.13.0",
"next": "10.2.0",
"next-csrf": "^0.1.2",
"npm": "^8.0.0",
"react": "^17.0.2",
"react-bootstrap": "^2.0.0-rc.0",
"react-dom": "^17.0.2",
"react-image-file-resizer": "^0.4.7",
"react-markdown": "^7.0.1",
"react-native-popup-confirm-toast": "^2.0.3",
"react-native-status-bar-height": "^2.6.0",
"react-player": "^2.9.0",
"react-router-dom": "^5.3.0",
"react-toastify": "^8.0.2",
"request": "^2.79.0",
"simple-react-footer": "^1.0.2",
"styled-components": "^5.3.1"
}
}
If anyone can help me with this it will be thankful

How to stop Heroku from trying to install Husky

I have a Node app (React) on Heroku and the deploy and build was previous working fine, I have now added Husky, Lint-staged, Craco and WDYR to a new branch which works locally.
Upon trying to deploy and build this branch on Heroku, I am finding that the build fails due to Heroku trying to install Husky despite me not asking it to and it being a development tool. It makes sense that Heroku cannot find Husky as it is a dev dependency.
From what I can see Heroku is running the prepare script from the client package.json, which it shouldn't be.
How can I stop Heroku from trying to install Husky?
Here are my package.json files (haven't included server package.json as I'm not sure it's relevant).
root
{
"engines": {
"node": "12.x"
},
"scripts": {
"start": "cd server && node server.js",
"build": "cd client && npm run build",
"install-server": "cd server && npm ci",
"install-client": "cd client && npm ci",
"heroku-postbuild": "npm run install-server && npm run install-client && npm run build"
}
}
client
{
"name": "qupp",
"version": "1.0.0",
"description": "App that allows users to create playlists using Spotify's API",
"engines": {
"node": "12.x"
},
"scripts": {
"build:css": "postcss src/App.scss -o src/index.css",
"watch:css": "postcss src/App.scss -o src/index.css -w",
"start_new": "PORT=3002 craco start",
"start": "npm run watch:css & PORT=3002 craco start",
"build": "npm run build:css && craco build",
"test": "craco test",
"eject": "react-scripts eject",
"prepare": "cd ../ && husky install ./client/.husky"
},
"proxy": "http://127.0.0.1:8082/",
"author": "Daniel Blythe",
"license": "ISC",
"dependencies": {
"#craco/craco": "^6.3.0",
"#types/jest": "^24.0.17",
"#types/materialize-css": "^1.0.6",
"#types/node": "^12.7.1",
"#types/react": "^16.9.1",
"#types/react-dom": "^16.8.5",
"axios": "^0.18.0",
"babel-preset-es2015-node6": "^0.4.0",
"classnames": "^2.2.6",
"dotenv": "^6.1.0",
"firebase": "^8.2.4",
"http2": "^3.3.7",
"jwt-decode": "^2.2.0",
"morgan": "^1.9.1",
"node-pre-gyp": "^0.11.0",
"node-sass": "^4.9.4",
"postcss-cli": "^6.1.3",
"prop-types": "^15.6.2",
"ramda": "^0.27.1",
"re-base": "^4.0.0",
"react": "^16.8.4",
"react-dom": "^16.8.4",
"react-dropzone": "^10.0.0",
"react-materialize": "^3.3.3",
"react-redux": "^6.0.0",
"react-router-dom": "^4.3.1",
"react-scripts": "4.0.3",
"react-spotify-player": "^1.0.4",
"react-transition-group": "^2.5.0",
"redux": "^4.0.1",
"redux-thunk": "^2.3.0",
"source-map-support": "^0.5.9",
"typescript": "^3.5.3"
},
"devDependencies": {
"#types/classnames": "^2.2.9",
"#types/react-redux": "^7.1.2",
"#welldone-software/why-did-you-render": "^6.2.1",
"autoprefixer": "^9.8.6",
"enzyme": "^3.9.0",
"enzyme-adapter-react-16": "^1.13.0",
"enzyme-to-json": "^3.3.5",
"eslint-config-prettier": "^8.3.0",
"eslint-plugin-no-autofix": "^1.1.2",
"eslint-plugin-prettier": "^3.4.1",
"husky": "^7.0.2",
"jest-dom": "^3.2.2",
"lint-staged": "^11.1.2",
"postcss": "^7.0.36",
"postcss-cli": "^6.1.2",
"prettier": "^2.3.2",
"pretty-quick": "^3.1.1",
"react-test-renderer": "^16.8.6",
"react-testing-library": "^7.0.0",
"tailwindcss": "npm:#tailwindcss/postcss7-compat#^2.2.14"
},
"jest": {
"snapshotSerializers": [
"enzyme-to-json/serializer"
]
},
"browserslist": [
">0.2%",
"not dead",
"not ie <= 11",
"not op_mini all"
]
}
Here is a screenshot of the error:

Here is the best solution:
run npm ci --only=production --ignore-scripts
https://github.com/typicode/husky/issues/920
Following is from Heroku support ticket (I did not check this info):
To cover the --only=production flag, you can set the environment
variable NPM_CONFIG_PRODUCTION=true
https://devcenter.heroku.com/articles/nodejs-support#only-installing-dependencies
While it isn’t possible to add the --ignore-scripts flag to the
install command directly, it can be set via npm config with npm config
set ignore-scripts true and this will achieve the same thing during
installation.
The above command could be included using heroku-specific-build steps.
e.g.;
"scripts": {
"heroku-prebuild": "npm config set ignore-scripts true",
...
}
Alternative solution (but it has a drawback):
You can direct Heroku to only install dependencies by setting environment variables NPM_CONFIG_PRODUCTION=true or YARN_PRODUCTION=true
See https://devcenter.heroku.com/articles/nodejs-support#only-installing-dependencies
This way you won't install devDependencies, assuming husky is in devDependencies (why would it not be?) meaning husky will never install.
The drawback is it won't install with any other devDependencies and i.e. I have there webpack which is required to run on build step. I don't want to move it from devDependencies to dependencies so I cant use this solution.

Why do I keep getting Heroku 503 Error while in Production?

I'm trying to get my website to function properly after being deployed on Heroku. It is essentially a Youtube Clone; you sign up for an account and then you can upload videos. Locally, it runs correctly, but I constantly receive a 503 Error; this time while uploading a video. The thumbnails of the video do not load, see image below
The code is at this repo: https://github.com/aladin94/clone2.
The heroku website: https://afternoon-sea-81365.herokuapp.com/
The Package.json:
{
"name": "youtubeapp",
"version": "1.0.0",
"description": "youtube-clone",
"main": "index.js",
"engines": {
"node": "10.14.1",
"npm": "6.4.1"
},
"scripts": {
"start": "node index.js",
"build": "cd client && npm run build",
"install-client": "cd client && npm install",
"heroku-postbuild": "npm run install-client && npm run build",
"backend": "nodemon index.js",
"frontend": "npm run front --prefix client",
"dev": "concurrently \"npm run backend\" \"npm run start --prefix client\""
},
"author": "aladin feratovic",
"license": "ISC",
"dependencies": {
"bcrypt": "^3.0.6",
"body-parser": "^1.18.3",
"concurrently": "^4.1.0",
"cookie-parser": "^1.4.3",
"dotenv": "^8.2.0",
"express": "^4.17.1",
"fluent-ffmpeg": "^2.1.2",
"jsonwebtoken": "^8.5.1",
"moment": "^2.24.0",
"mongoose": "^5.4.20",
"multer": "^1.4.2",
"nodemon": "^1.19.1",
"react-redux": "^5.0.7",
"socket.io": "^2.2.0"
},
"proxy": "http://localhost:5000"
}
The Heroku logs:
Not sure if the code for the routes (get/post) are not tuned properly for Production? I've attached the mongoDB database (whitelisted the ip too) and structured my files accordingly for Heroku.
Please let me know what i'm doing wrong.

Add create-react-app as frontend in express project

I have a custom Express project with a small React front-end builded with gulp.
What I would like to do is to add a create-react-app as second front-end like this one in my project, so I:
created a src/ folder in the root of the project
pasted the src/ form the create-react-app in my project src/
added react-scripts and all the create-react-app dependencies in my package.json
installed all the new dependencies
added "build": "react-scripts build", to my package.json scripts
I would like to build the create-react-app in the default folder /build and respond to all the request that doesn't match my API routes with the index of the builded create-react-app using this code in the routes bottom:
app.get('*', (req, res)=>{
res.sendFile(path.join(__dirname, '..','build','index.html'));
})
But running npm run build I get:
> node-js-scaffolder#0.0.1 build /Users/matt/dev/my-api
> react-scripts build
Could not find a required file.
Name: index.html
Searched in: /Users/matt/dev/my-api/public
I actually have a public/ folder where gulp saves my builded front end together with some images, but react-scripts should look in the src/ folder for the entry point of the create-react-app.
EDIT: my full package.json:
{
"name": "my project",
"version": "0.0.1",
"private": true,
"scripts": {
"build": "react-scripts build",
"start": "npm run gulp -- --production && sequelize db:migrate --config=config/migrations.json --env=production && pm2 startOrReload config/pm2/production.json",
"dev": "npm run gulp dev -- --development",
"gulp": "gulp",
"prestart": "npm install",
"startStaging": "npm install && npm run gulp -- --staging && sequelize db:migrate --config=config/migrations.json --env=staging && pm2 startOrReload config/pm2/staging.json",
"stop": "pm2 stop config/pm2/production.json",
"stopStaging": "pm2 stop config/pm2/staging.json",
"deploy": "git pull && npm start",
"deployStaging": "git pull && npm run startStaging",
},
"dependencies": {
"#babel/runtime": "7.0.0-beta.55",
"#material-ui/core": "1.4.1",
"#material-ui/icons": "2.0.0",
"#types/googlemaps": "3.30.11",
"#types/markerclustererplus": "2.1.33",
"ajv": "6.5.2",
"async": "^2.6.0",
"babel-polyfill": "^6.26.0",
"body-parser": "^1.18.2",
"bunyan": "^1.8.12",
"chance": "^1.0.12",
"chartist": "0.10.1",
"cheerio": "^0.20.0",
"classnames": "2.2.6",
"compression": "^1.7.1",
"connect-flash": "^0.1.1",
"continuation-local-storage": "^3.2.1",
"cookie-parser": "^1.3.3",
"csv-parse": "^2.2.0",
"del": "^2.2.2",
"express": "^4.16.2",
"express-brute": "^1.0.1",
"express-brute-redis": "0.0.1",
"express-jwt": "^3.4.0",
"geolib": "^2.0.24",
"glob": "^6.0.4",
"helmet": "^2.3.0",
"inky": "^1.3.7",
"js-cookie": "^2.2.0",
"jsonwebtoken": "^7.4.3",
"juice": "^2.0.0",
"lodash": "^4.17.4",
"material-ui": "^0.19.3",
"method-override": "^2.3.10",
"minimist": "^1.2.0",
"moment": "^2.19.3",
"moment-timezone": "^0.5.14",
"morgan": "^1.9.0",
"multi-glob": "^1.0.1",
"mysql": "^2.15.0",
"node-fetch": "^2.1.2",
"node-sass": "^3.13.1",
"node-schedule": "^1.2.5",
"nunjucks": "^2.5.2",
"perfect-scrollbar": "1.4.0",
"prop-types": "^15.6.0",
"react": "^16.2.0",
"react-chartist": "0.13.1",
"react-dom": "16.4.1",
"react-dropzone": "^4.2.3",
"react-google-maps": "9.4.5",
"react-redux": "^5.0.6",
"react-router-dom": "4.3.1",
"react-scripts": "1.1.4",
"react-swipeable-views": "0.12.15",
"redux": "^3.7.2",
"redux-thunk": "^2.3.0",
"request": "^2.83.0",
"run-sequence": "^1.2.2",
"sequelize": "^3.31.0",
"serve-favicon": "^2.4.5",
"slugify": "^1.3.0",
"uuid": "^3.1.0",
"validator": "^9.2.0",
"vinyl-buffer": "^1.0.0"
},
}
What am I doing wrong?

I've made a new repository but I still want to serve the create-react-app with express so I've followed this tutorial and created a /client folder in my project and put there all the create-react-app files and folders together with its package.json.
The scripts I use to deploy or lunch in dev mode are the following:
"client": "cd client && yarn start",
"server": "nodemon server.js",
"dev": "concurrently --kill-others-on-fail \"yarn server\" \"yarn client\"",
"build": "yarn && cd client && yarn && yarn build && cd ../",
"deploy": "git pull origin master && yarn build && pm2 restart server.js || pm2 start server.js"
I'd like to know which are the cons of this approach if someone has any experience.

First, eject your create-react-app project like this :
npm run eject or yarn eject
Second, you can configure index.html and public folder path from: [react-project-dir]/config/paths.js
In your case i assume eject command will create a folder in root directory of your project so you can find it in: [project-dir]/config/paths.js
You can change these parameters:
...
appPublic: resolveApp('public'),
appHtml: resolveApp('public/index.html'),
like this:
appPublic: resolveApp('public_react'),
appHtml: resolveApp('public_react/index.html'),

Elastic APM agent is inactive due to configuration. What does it mean?

I have a problem when I want to start the app, when i type npm run server. And the error information are like this :
opbeans#1.0.0 server /home/rahmat/independentProject/sample/sample3/opbeannode server.js
Elastic APM agent is inactive due to configuration
server is listening on port 3001
events.js:183
throw er; // Unhandled 'error' event
^
Elastic APM agent is inactive due to configuration, what does it mean?
Maybe someone can help me, please...
This is the package.json :
{
"name": "opbeans",
"version": "1.0.0",
"description": "The Opbeans inventory management system",
"main": "server.js",
"dependencies": {
"after-all-results": "^2.0.0",
"body-parser": "^1.15.2",
"concurrently": "^3.1.0",
"detect-port": "^1.2.2",
"elastic-apm-node": "^1.3.0",
"express": "^4.14.0",
"pg": "^6.1.2",
"redis": "^2.6.3",
"request": "^2.79.0",
"webpack": "^4.3.0",
"webpack-dev-server": "^3.1.1",
"workload": "^2.3.0"
},
"devDependencies": {
"dotenv": "^4.0.0",
"react-dev-utils": "^5.0.0",
"react-scripts": "^1.1.1",
"standard": "^10.0.2"
},
"scripts": {
"db-setup": "./db/setup.sh",
"test": "standard .js server//.js db//*.js",
"server": "node server.js",
"client": "npm run start --prefix client/",
"client-build": "npm run build --prefix client/",
"client-install": "npm install --prefix client/",
"postinstall": "./client/build-client.sh",
"start": "concurrently \"npm run server\" \"npm run client\"",
"workload": "workload -f .workload.js"
}