Does that table exist in your database? If it does not, than your install is not correct! That is a core database table and should exist regardless if you are using xbilling or not.
UNLESS: you are using the latest Sentora BETA. Then xbilling will need to be updated from 'zpanel_core' to 'sentora_core'.
For now, you will need to edit this manually to get it to work.
UNLESS: you are using the latest Sentora BETA. Then xbilling will need to be updated from 'zpanel_core' to 'sentora_core'.
For now, you will need to edit this manually to get it to work.