Mac usage logs

This Mac can’t connect to iCloud because of a problem with xxx@mail.com

Writing login information to the keychain failed with error "xxx".

solution :
open Finder => press shift+command+G => input ~/Library/Application Support/iCloud/Accounts/ => delete everything => open System Preferences => click Apple ID => click iCloud => input account and passcode => enjoy mac.

You may also need to reset the keychain Access settings