Module not Found on Heroku Deploy but Found on Local - reactjs

Question

So I tried to deploy my app to Heroku and find this error Module not found: Error: Can't resolve './components/add-credentials/AddEducation' in '/tmp/build_6b46c3e828c5afc20e70a4b1b2232f69/client/src'
Everything works fine including that module in localhost. What should I change for this to work?
Complete Build Log
-----> 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): 8.11.x
engines.npm (package.json): 5.6.x
engines.yarn (package.json): 1.9.x
Resolving node version 8.11.x...
Downloading and installing node 8.11.4...
Bootstrapping npm 5.6.x (replacing 5.6.0)...
npm 5.6.x installed
Resolving yarn version 1.9.x...
Downloading and installing yarn (1.9.4)...
Installed yarn 1.9.4
-----> Building dependencies
Installing node modules (yarn.lock)
yarn install v1.9.4
[1/4] Resolving packages...
[2/4] Fetching packages...
info fsevents#1.2.4: The platform "linux" is incompatible with this module.
info "fsevents#1.2.4" is an optional dependency and failed compatibility check. Excluding it from installation.
[3/4] Linking dependencies...
[4/4] Building fresh packages...
Done in 13.99s.
Running heroku-postbuild (yarn)
yarn run v1.9.4
$ NPM_CONFIG_PRODUCTION=false npm install --prefix client && npm run build --prefix client
> uglifyjs-webpack-plugin#0.4.6 postinstall /tmp/build_6b46c3e828c5afc20e70a4b1b2232f69/client/node_modules/uglifyjs-webpack-plugin
> node lib/post_install.js
added 1546 packages in 41.748s
> client#0.1.0 build /tmp/build_6b46c3e828c5afc20e70a4b1b2232f69/client
> react-scripts build
Creating an optimized production build...
Failed to compile.
Module not found: Error: Can't resolve './components/add-credentials/AddEducation' in '/tmp/build_6b46c3e828c5afc20e70a4b1b2232f69/client/src'
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! client#0.1.0 build: `react-scripts build`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the client#0.1.0 build script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
npm ERR! A complete log of this run can be found in:
npm ERR! /tmp/npmcache.te6Qt/_logs/2018-09-14T23_46_37_674Z-debug.log
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
-----> Build failed
We're sorry this build is failing! You can troubleshoot common issues here:
https://devcenter.heroku.com/articles/troubleshooting-node-deploys
If you're stuck, please submit a ticket so we can help:
https://help.heroku.com/
Love,
Heroku
! Push rejected, failed to compile Node.js app.
! Push failed
Package.json
{
"name": "devconnector",
"version": "1.0.0",
"description": "Social network for developers",
"engines": {
"node": "8.11.x",
"npm": "5.6.x",
"yarn": "1.9.x"
},
"main": "server.js",
"scripts": {
"client-install": "npm install --prefix client",
"start": "node server.js",
"server": "nodemon server.js",
"client": "npm start --prefix client",
"dev": "concurrently \"npm run server\" \"npm run client\"",
"heroku-postbuild": "NPM_CONFIG_PRODUCTION=false npm install --prefix client && npm run build --prefix client"
},
"author": "Dian Yuanda",
"license": "MIT",
"dependencies": {
"bcryptjs": "^2.4.3",
"body-parser": "^1.18.2",
"concurrently": "^4.0.1",
"create-react-app": "^1.5.2",
"express": "^4.16.3",
"global": "^4.3.2",
"gravatar": "^1.6.0",
"jsonwebtoken": "^8.2.0",
"mongoose": "^5.0.12",
"passport": "^0.4.0",
"passport-jwt": "^4.0.0",
"validator": "^9.4.1"
},
"devDependencies": {
"nodemon": "^1.17.5"
}
}