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='54.221.29.4') WHERE t.threadid = '720'
mysql error: Unknown column 'v.votemode' in 'on clause'
mysql error number: 1054
mysql version: 5.5.58-0+deb7u1-log
php version: 5.6.33
Date: 16.01.2018 @ 14:20
Script: /thread.php?threadid=720&sid=73925ef1a4045ef1a9ecaf96b4ae160c
Referer: