NOpermissions (FileSystemError): Erro: Eacces: Permissão negada, Open /var/www/html/index.html
$ sudo chown -R <user-name> <directory-name>
AriaRahmati
$ sudo chown -R <user-name> <directory-name>sudo npm install -g --unsafe-perm=true --allow-root
sudo chown -R username pathsudo chmod -R 777 /Users/sharatakasapu/{your node module path}