Looking at the difference between logs. Looks like Power supply issue.

Unstable:
PS[0 1214 2 0 0 1308]

Stable:
PS[0 1217 1311 243 3190 1308]

Item 3: the voltage supplied
to the hash board is normally
between 1200 and 1400 (unit:
10mV).

The log description can be found here:
https://canaan.io/wp-content/uploads/2020/03/log-Description.pdf