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 ('670072687104a026b5f97837bc215699','0','54.235.55.253','CCBot/2.0 (https://commoncrawl.org/faq/)','1550327061','jgs_portal_box.php?id=43','0','0','')
mysql error: The table 'bb1_sessions' is full
mysql error number: 1114
mysql version: 5.5.60-MariaDB
php version: 5.4.16
Date: 16.02.2019 @ 15:24
Script: /jgs_portal_box.php?id=43
Referer: