can you try to run sudo npm i

Oh it really works. Please tell me what effect sudo has because normally I can run npm

sudo command lets you run the command as "admin", this can make it work for now, but from now on you should investigate a problem that you have with npm

So that's just a temporary way to solve the problem?

yeah, you can try to reinstall node/npm, remove npm cache, etc

I just switched to Mac not long ago, can I ask if deleting the cache you mentioned is it?

you have a npm command to remove the npm cache
npm cache clean --force

doesn't seem very good