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`='6a4b0ca9beb3017e0b3f88f9b3fceba9',`time`='1711718575',`ip`='54.144.219.156',`location`='/showthread.php?mode=linear&tid=9&pid=40',`useragent`='claudebot',`location1`='3',`location2`='9',`nopermission`='0'