any help please??system rebooted because of kernel failure!!

everyday my mikrotik 433 borad reboots everyday @ 9 am, so sounds wired, and i do not know what is the problem, so i just logged into my borad logs, i found that “system rebooted because of kernel failure”.
so what is that, and how i can fix the problem, thx
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make sure you are using latest RouterOS release. Get another reboot, if there is no autosupout.rif file then generate support output file manually and send it to support@mikrotik.com