MyBB SQL Error

MyBB has experienced an internal SQL error and cannot continue.

SQL Error:
1062 - Duplicate entry '0' for key 'uid'
Query:
REPLACE INTO mybb_sessions SET `uid`='0',`sid`='3d45bf860f64db75bef02f159df0b017',`time`='1711648448',`ip`='35.175.172.94',`location`='/showthread.php?mode=linear&tid=2&pid=11',`useragent`='claudebot',`location1`='3',`location2`='2',`nopermission`='0'