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 ('63012c5bd1c0036f6d3ff3595b685f2b','0','3.149.26.246','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715030567','thread.php?threadid=637&threadview=1&hilight=&hilightuser=0&sid=016d869baf6f72d648bf19daf0b3a62b','0','0','')
mysql error: Duplicate entry '63012c5bd1c0036f6d3ff3595b685f2b' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 06.05.2024 @ 23:22
Script: /thread.php?threadid=637&threadview=1&hilight=&hilightuser=0&sid=016d869baf6f72d648bf19daf0b3a62b
Referer: http://wehrbauten.de/thread.php?threadid=637&threadview=1&hilight=&hilightuser=0&sid=016d869baf6f72d648bf19daf0b3a62b