The update cannot be installed because we will be unable to copy some files. This is usually due to inconsistent file permissions.: wp-admin/includes/update-core.php

The update cannot be installed because we will be unable to copy some files. This is usually due to inconsistent file permissions.: wp-admin/includes/update-core.php

• find /var/www/example.com -type d -exec chmod 755 ‘{}’ \;
• find /var/www/example.com -type f -exec chmod 644 ‘{}’ \;
• chown -R  www-data:www-data   /var/www/example.com;