I thought my router died today

Hardware MikroTik hardware general
1

Hi everyone!
I thought my router died today
Suddenly, everything stopped working.
stopped beeping when turned on/reset, lost wifi, lost Internet, stopped working dhcp, flashing 2 ports of 5 connected and reset motherboard failed.
After some time with the help of “dance with tambourines” managed to revive him.
This time, apparently,i was lucky…

the logs showed the following error:

what is this?

2

Could be that NAND storage died … what does /system resource print show at bad-blocks?

3

every 7 days I get a notification about the status of some parts of the device. the last time it was 0%

now it is also 0%:

4

want to hear the administration’s response.
what does this errors mean?
to use a router in work or to replace?