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`='88ec43a0ef5661dcb30f095b799dd6cf',`time`='1711663816',`ip`='54.81.33.119',`location`='/calendar.php?action=addevent&calendar=1&day=9&month=4&year=2017',`useragent`='claudebot',`location1`='0',`location2`='0',`nopermission`='0'