Error: failed to push some refs in heroku - node.js

Question

I was following a course online on how to deploy in Heroku. I made a Git repository and uploaded and committed all the files there. Then I typed these commands:
heroku create
heroku git:remote -a name_provided_by_heroku
git push heroku main
After command 3 I faced this error in cmd:
Enumerating objects: 4357, done.
Counting objects: 100% (4357/4357), done.
Delta compression using up to 4 threads
Compressing objects: 100% (4125/4125), done.
Writing objects: 100% (4357/4357), 3.64 MiB | 297.00 KiB/s, done.
Total 4357 (delta 935), reused 3 (delta 0), pack-reused 0
remote: Compressing source files... done.
remote: Building source:
remote:
remote: -----> Node.js app detected
remote:
remote: -----> Creating runtime environment
remote:
remote: NPM_CONFIG_LOGLEVEL=error
remote: NODE_ENV=production
remote: NODE_MODULES_CACHE=true
remote: NODE_VERBOSE=false
remote:
remote: -----> Installing binaries
remote: engines.node (package.json): unspecified
remote: engines.npm (package.json): unspecified (use default)
remote:
remote: Resolving node version 12.x...
remote: Downloading and installing node 12.20.0...
remote: Using default npm version: 6.14.8
remote:
remote: -----> Installing dependencies
remote: Prebuild detected (node_modules already exists)
remote: Rebuilding any native modules
remote:
remote: > bcrypt#5.0.0 install /tmp/build_88514da7/node_modules/bcrypt
remote: > node-pre-gyp install --fallback-to-build
remote:
remote: sh: 1: node-pre-gyp: Permission denied
remote: npm ERR! code ELIFECYCLE
remote: npm ERR! errno 126
remote: npm ERR! bcrypt#5.0.0 install: `node-pre-gyp install --fallback-to-build`
remote: npm ERR! Exit status 126
remote: npm ERR!
remote: npm ERR! Failed at the bcrypt#5.0.0 install script.
remote: npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
remote:
remote: npm ERR! A complete log of this run can be found in:
remote: npm ERR! /tmp/npmcache.MO7JR/_logs/2020-12-15T17_16_14_007Z-debug.log
remote:
remote: -----> Build failed
remote:
remote: We're sorry this build is failing! You can troubleshoot common issues here:
remote: https://devcenter.heroku.com/articles/troubleshooting-node-deploys
remote:
remote: Some possible problems:
remote:
remote: - node_modules checked into source control
remote: https://devcenter.heroku.com/articles/node-best-practices#only-git-the-important-bits
remote:
remote: - Node version not specified in package.json
remote: https://devcenter.heroku.com/articles/nodejs-support#specifying-a-node-js-version
remote:
remote: Love,
remote: Heroku
remote:
remote: ! Push rejected, failed to compile Node.js app.
remote:
remote: ! Push failed
remote: Verifying deploy...
remote:
remote: ! Push rejected to safe-dawn-68695.
remote:
To https://git.heroku.com/safe-dawn-68695.git
! [remote rejected] main -> main (pre-receive hook declined)
error: failed to push some refs to 'https://git.heroku.com/safe-dawn-68695.git'
I am new to Heroku, so I am not able to get what the error is saying. Also tried using git push heroku HEAD:master but faced the same error.
How do I solve this?

Answer 1

Refering this article: node-pre-gyp: Permission denied in heroku push
Remove node_modules folder in your root folder rm -rf node_modules beacuse heroku will install all your dependencies, I hope this will work
So remove your node modules folder and do 1 2 3 again