MySQL server error report:Array ( [0] => Array ( [message] => MySQL Query Error ) [1] => Array ( [sql] => SELECT act_id, act_name, act_type, start_time, end_time FROM `hdm643985159_db`.`new_goods_activity` WHERE is_finished=0 AND start_time <= '1573729315' AND end_time >= '1573729315' AND goods_id = '131' ) [2] => Array ( [error] => Out of resources when opening file './hdm643985159_db/new_goods_activity.MYD' (Errcode: 24 - Too many open files) ) [3] => Array ( [errno] => 23 ) )