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 ('d3d0d4135379eae38ffdc1701e127eee','0','54.234.114.202','CCBot/2.0 (https://commoncrawl.org/faq/)','1547784350','calendar.php?action=eventcalendar','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: 18.01.2019 @ 05:05
Script: /calendar.php?action=eventcalendar
Referer: