amd pstate is the AMD driver for the cpu frequency control mechanism.
Although there was no message indicating that a reboot was required, did you do a reboot or not.
If not maybe a reboot would be useful. Not sure but it shouldn’t hurt.
Do you have the cpufrequtils addon installed.,
If yes then maybe uninstalling the addon and then re-installing it might help to get aligned.
Just to confirm, when you say latest core update, you do mean from CU179 to CU180. If yes, then I am not sure why the problem should occur now as there was no kernel update in CU180 and also the cpufrequtils addon hasn’t had an update.
Doing an internet search for those specific errors doesn’t come up with anything just links to the amd pstate info generally.