SQLSTATE[HY000]: General error: 1290 The MySQL server is running with the --rds-deny-access option so it cannot execute this statement

Typecho_Db_Query_Exception: SQLSTATE[HY000]: General error: 1290 The MySQL server is running with the --rds-deny-access option so it cannot execute this statement in /data/client/mooc/web/var/Typecho/Db/Adapter/Pdo.php:93
Stack trace:
#0 /data/client/mooc/web/var/Typecho/Db.php(319): Typecho_Db_Adapter_Pdo->query(Object(Typecho_Db_Query), Object(PDO), 1, 'SELECT')
#1 /data/client/mooc/web/var/Typecho/Db.php(349): Typecho_Db->query(Object(Typecho_Db_Query), 1)
#2 /data/client/mooc/web/var/Widget/Options.php(345): Typecho_Db->fetchAll(Object(Typecho_Db_Query), Array)
#3 /data/client/mooc/web/var/Typecho/Widget.php(222): Widget_Options->execute()
#4 /data/client/mooc/web/var/Widget/Init.php(27): Typecho_Widget::widget('Widget_Options')
#5 /data/client/mooc/web/var/Typecho/Widget.php(222): Widget_Init->execute()
#6 /data/client/mooc/web/index.php(16): Typecho_Widget::widget('Widget_Init')
#7 {main}