PHP Fatal error: Class 'Grav\\Common\\Service\\LoggerServiceProvider' not found

I keep getting this error when I try to open the One Page Grav skeleton from my web server. Any idea what might be causing it? I don’t get this error on any of the other skeletons from same web server.


It was a permissions issue. As soon as I did ‘sudo chown -R www-data /var/www/public_html’ it went away.