I updated to Catalina recently and previously I was able to backup my MacBook using Time machine backups. After the update time machine backup failed because of empty password issue (don't remember full error message), and now when I try to enable backups I'm getting following error after entering the backup password:
An error occurred while creating a System Keychain entry for encrypted Time Machine network backups
You can try using the Keychain Access utility to edit the System Keychain.
Any suggestions how to fix this?