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`='4ad8c58eb3ed7281f3234c683a8ff3d3',`time`='1711647674',`ip`='54.196.27.171',`location`='/showthread.php?mode=threaded&tid=4&pid=65',`useragent`='claudebot',`location1`='3',`location2`='4',`nopermission`='0'