A database error has occurred.  Did you forget to run maintenance/update.php after upgrading?  See: http://www.mediawiki.org/wiki/Manual:Upgrading#Run_the_update_script<br />
Query: SELECT  rev_id,rev_page,rev_text_id,rev_timestamp,rev_comment,rev_user_text,rev_user,rev_minor_edit,rev_deleted,rev_len,rev_parent_id,page_namespace,page_title,page_latest  FROM `page`,`revision`  WHERE (page_id=rev_page) AND rev_id = '1655'  LIMIT 1  <br />
Function: Revision::fetchFromConds<br />
Error: 1047 WSREP has not yet prepared node for application use (mysql-alternc3)<br />