MyBB SQL Error

MyBB has experienced an internal SQL error and cannot continue.

SQL Error:
1142 - INSERT command denied to user 'all4_forum'@'10.254.28.158' for table 'mybb_sessions'
Query:
REPLACE INTO mybb_sessions SET `uid`=0,`sid`='90b9a1dd159a00e9d5cda7cafb0614c8',`time`=1618650335,`ip`=X'03ee5823',`location`='/index.php?',`useragent`='CCBot/2.0 (https://commoncrawl.org/faq/)',`location1`=0,`location2`=0,`nopermission`=0