MyBB SQL Error

MyBB has experienced an internal SQL error and cannot continue.

SQL Error:
1062 - Duplicate entry '0' for key 'location1'
Query:
REPLACE INTO mybb_sessions SET `uid`='0',`sid`='8401d71f6a61c6067a26985c0a6f9a66',`time`='1711620552',`ip`='3.81.30.41',`location`='/calendar.php?action=addevent&calendar=1&day=20&month=11&year=2017',`useragent`='claudebot',`location1`='0',`location2`='0',`nopermission`='0'