[Fri Aug 14 12:38:58 2015] [error] [client 212.159.64.37] PHP Fatal error: Access level to WP_Plugins_List_Table::get_views() must be public (as in class WP_List_Table) in /home/rebeltech/wordpress/wp-admin/includes/class-wp-plugins-list-table.php on line 648, referer: http://www.rebeltech.org/wp-admin/
Also Settings/Sharing not working, clicking on Facebook or Google+ produces this:
Something which should never happen, happened. Sorry about that. If you try again, maybe it will work.
Error code: -32300
Upgraded to latest WP, upgraded Jetpack.
Some admin pages aren't loading, e.g. plugins http://www.rebeltech.org/wp-admin/plugins.php Error log says
Also Settings/Sharing not working, clicking on Facebook or Google+ produces this: