! [remote rejected] main -> main (pre-receive hook declined),error: failed to push some refs to 오류가 뜨네요...

-----> Build

       Running build

       > fiveserver@0.1.0 build /tmp/build_b99169be

       > react-scripts build

       Could not find a required file.

         Name: index.html

         Searched in: /tmp/build_b99169be/public

npm ERR! code ELIFECYCLE

npm ERR! errno 1

npm ERR! fiveserver@0.1.0 build: `react-scripts build`

npm ERR! Exit status 1

npm ERR! 

npm ERR! Failed at the fiveserver@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.U7Rlz/_logs/2021-10-25T13_39_03_674Z-debug.log

-----> Build failed

       We're sorry this build is failing! You can troubleshoot common issues here:

       https://devcenter.heroku.com/articles/troubleshooting-node-deploys

       Some possible problems:

       - Node version not specified in package.json

         https://devcenter.heroku.com/articles/nodejs-support#specifying-a-node-js-version

       Love,

       Heroku

 !     Push rejected, failed to compile Node.js app.

 !     Push failed

이렇게 나와있어요 진짜 며칠 째 고생 중이네요 ㅠㅠ