MyBB SQL Error

MyBB has experienced an internal SQL error and cannot continue.

SQL Error:
1142 - INSERT command denied to user 'fairplaycup'@'localhost' for table 'mybb_sessions'
Query:
REPLACE INTO mybb_sessions SET `uid`='0',`sid`='89c89831346ef67254a961e662b67110',`time`='1480764562',`ip`='54.146.177.118',`location`='/index.php?',`useragent`='CCBot/2.0 (http://commoncrawl.org/faq/)',`location1`='0',`location2`='0',`nopermission`='0'