MyBB SQL Error

MyBB has experienced an internal SQL error and cannot continue.

SQL Error:
1114 - The table 'mybb_sessions' is full
Query:
REPLACE INTO mybb_sessions SET `uid`='0',`sid`='86a7505d7bdaf9a687a6f3741f9d3681',`time`='1711621428',`ip`='52.90.50.252',`location`='/showthread.php?tid=21278',`useragent`='claudebot',`location1`='18',`location2`='21278',`nopermission`='0'