I really do not understand what the issue is here;

warning: array_shift() [function.array-shift]: The argument should be an array in /var/www/vhosts/website.com/httpdocs/new/modules/fancybox/fancybox.admin.inc on line 168.
warning: array_shift() [function.array-shift]: The argument should be an array in /var/www/vhosts/website.com/httpdocs/new/modules/fancybox/fancybox.admin.inc on line 169.
No Fancybox plugin found in sites/all/libraries/fancybox