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 ('ac232a4cd43461f84e6ad312d4c8f28e','0','3.238.7.202','CCBot/2.0 (https://commoncrawl.org/faq/)','1614216753','thread.php?threadid=14321&goto=lastpost','0','0','')
mysql error: The table 'bb1_sessions' is full
mysql error number: 1114
mysql version: 5.6.44-nmm1-log
php version: 5.6.38-nmm2
Date: 25.02.2021 @ 02:32
Script: /thread.php?threadid=14321&goto=lastpost
Referer: