SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: SELECT t.*, v.id AS isvoted FROM bb1_threads t LEFT JOIN bb1_votes v ON (v.id=t.threadid AND v.votemode=2 AND v.ipaddress='54.198.134.32') WHERE t.threadid = '2794'
mysql error: Unknown column 'v.votemode' in 'on clause'
mysql error number: 1054
mysql version: 5.5.57-0+deb7u1-log
php version: 5.6.31
Date: 21.11.2017 @ 16:53
Script: /thread.php?threadid=2794&goto=lastpost&sid=f09e2af1fc6f525d0e7cfd8084966b86
Referer: