Unable to find row with id in ScheduledTasks table

Hello.

Plesk 12.5.30 #24

User can't add task
panel.log
[2016-03-10 16:41:10] ERR [1] Unable to find row with id in ScheduledTasks table.
[2016-03-10 16:41:13] ERR [panel] Db_Table_Exception: Unable to find row with id in ScheduledTasks table.
[2016-03-10 16:56:42] ERR [1] Unable to find row with id in ScheduledTasks table.
[2016-03-10 16:56:44] ERR [panel] Db_Table_Exception: Unable to find row with id in ScheduledTasks table.

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Unable to find row with id in ScheduledTasks table