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 ('4bb443852fcc4e7aa34e4da75701a0bf','0','3.145.71.159','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1716232852','misc.php?action=imprint&sid=92424b74b20819e00e0d7b778140fd9c','0','0','')
mysql error: Duplicate entry '4bb443852fcc4e7aa34e4da75701a0bf' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 20.05.2024 @ 21:20
Script: /misc.php?action=imprint&sid=92424b74b20819e00e0d7b778140fd9c
Referer: