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`='40b6a9e9801259c0e4c3479a9647a5c4',`time`='1493137435',`ip`='23.20.219.0',`location`='/forum/member.php?action=profile&uid=256338',`useragent`='CCBot/2.0 (http://commoncrawl.org/faq/)',`location1`='0',`location2`='0',`nopermission`='0'