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 ('ec389871b19a2d3bfcf5df47daa94472','0','3.215.180.226','CCBot/2.0 (https://commoncrawl.org/faq/)','1615158672','board.php?boardid=255','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: 08.03.2021 @ 00:11
Script: /board.php?boardid=255
Referer: