SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('c52496c3c4cb20ab9512d4bb7fc4332d','0','3.21.98.120','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715674303','index.php?sid=49f301036568aacd94dda75f2d845f96','0','0','')
mysql error: Duplicate entry 'c52496c3c4cb20ab9512d4bb7fc4332d' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 14.05.2024 @ 10:11
Script: /index.php?sid=49f301036568aacd94dda75f2d845f96
Referer: