Fxminer keeps restarting after upgrading to 8.2.2

[farshadseifi]

After upgrading to 8.2.2 the Fxminer keeps restarting and miners not working.
I try to upgrade my ubuntu from 18.04 to 20.04 but that dos't fix the problem.

[FxPool]

You go back to the previous version and we'll see what the problem is.

[FxPool]

Execute the command：cat /etc/fxpool-fxminerproxyv3/error.log 。

[FxPool]

What is the information about error.log？