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 ('3a4942b5948dfbdd37ae6e6e361bdfa2','0','54.226.64.30','CCBot/2.0 (https://commoncrawl.org/faq/)','1547666754','thread.php?goto=lastpost&threadid=5444','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: 16.01.2019 @ 20:25
Script: /thread.php?goto=lastpost&threadid=5444
Referer: