Discuz! Database Error

(1062) Duplicate entry '166596' for key 'PRIMARY'

INSERT INTO common_member_newprompt SET `uid`='166596' , `data`='a:1:{s:6:\"system\";i:1;}'

PHP Debug

No.	File	Line	Code
1	forum.php	57	discuz_application->init()
2	source/class/discuz/discuz_application.php	70	discuz_application->_init_cron()
3	source/class/discuz/discuz_application.php	553	discuz_cron::run()
4	source/class/discuz/discuz_cron.php	48	include(%s)
5	source/include/cron/cron_income_notify_daily.php	28	notification_add(%s, %s, %s, %s, %d)
6	source/function/function_core.php	1675	helper_notification::notification_add(%s, %s, %s, %s, %d)
7	source/class/helper/helper_notification.php	128	table_common_member_newprompt->insert(%s, Array)
8	source/class/table/table_common_member_newprompt.php	29	discuz_database::insert(%s, Array)
9	source/class/discuz/discuz_database.php	60	discuz_database::query(%s, %s, %s, true)
10	source/class/discuz/discuz_database.php	137	db_driver_mysql->query(%s, %s, true)
11	source/class/db/db_driver_mysql.php	153	db_driver_mysql->halt(%s, %d, %s)
12	source/class/db/db_driver_mysql.php	224	break()