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`='950a2f8724f5630053f77d39578b00f9',`time`='1711719866',`ip`='35.172.231.232',`location`='/showthread.php?tid=2&pid=12',`useragent`='claudebot',`location1`='3',`location2`='2',`nopermission`='0'