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='54.227.104.53') WHERE t.threadid = '2001'
mysql error: Unknown column 'v.votemode' in 'on clause'
mysql error number: 1054
mysql version: 5.5.59-0+deb7u1-log
php version: 5.6.33
Date: 22.02.2018 @ 19:25
Script: /thread.php?goto=lastpost&threadid=2001&sid=7c392b0c27bd5d85b02f3b1140955923
Referer: