Discuz! System Error

Class "table_forum_attachment_unused" does not have a method named "delete_by_dateline".

PHP Debug

No.FileLineCode
1forum.php56discuz_application->init()
2source/class/discuz/discuz_application.php70discuz_application->_init_cron()
3source/class/discuz/discuz_application.php551discuz_cron::run()
4source/class/discuz/discuz_cron.php48include(%s)
5source/include/cron/cron_delete_unused_data_daily.php10discuz_base->__call(%s, Array)
6source/class/discuz/discuz_base.php44break()
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