Why doesn't it work out to deploy react project on github pages?

Question

GitHub

Actually, I made a training project in React. It is deployed on the local server, everything works. The build also passes, writes, ready to deploy, and then it gives out like this.

I tried to find what kind of error, I realized that it occurs often. They suggest uninstalling and reinstalling npm, tried it, does not help.
package.json here. But there seems to be no mistakes here.

Experienced gurus, help me out)) I want to stick a couple of dozen such projects for my portfolio, if there are such troubles with each, then you can hang yourself

Answer 1

Reinstall node js and delete the node modules folder on your local drive if it exists