Fatal error: Uncaught mysqli_sql_exception: MySQL server has gone away in /var/www/html/mybb/inc/db_mysqli.php:332
Stack trace:
#0 /var/www/html/mybb/inc/db_mysqli.php(332): mysqli_query()
#1 /var/www/html/mybb/inc/db_mysqli.php(798): DB_MySQLi->query()
#2 /var/www/html/mybb/global.php(196): DB_MySQLi->simple_select()
#3 /var/www/html/mybb/showthread.php(28): require_once('...')
#4 {main}
thrown in /var/www/html/mybb/inc/db_mysqli.php on line 332