How do you restart the server?
In your article, “Make sure your Strapi server is not running at the moment of installation, you can restart it right after.” But there is no instruction how to do this and the usual commands are not available.
yarn dev is not available from the parent directory. Neither is yarn start, yarn run. It does not recognize the strapi command.
If you cd into the strapi-cloudinary directory, it then wants to recurse.