Path '' is not accessible or present !!!

[allorder]

I got this error at each cron job:

"app":"OC\Files\Cache\Scanner","message":"!!! Path '' is not accessible or present !!!","level":0,"time":"2016-07-05T10:30:01-04:00","method":"--","url":"--","user":"--"}

But, when doing: sudo -u www-data php -f /var/www/nextcloud/cron.php I got no error...

Should I ignore this error or ..?

[MorrisJobke]

Should I ignore this error or ..?

This is debug log: https://github.com/nextcloud/server/blob/master/lib/public/Util.php#L60 - you can ignore it.