There is a very simple bug which is resulting in error for many users trying to install WordPress on Cyberpanel.
The database name as defined by Cyberpanel is 5 characters of the domain name + _ and database name. For example, the database name for domain.com databases would be “domai_database”.
But one click Wordpress installation tries to create “database” as an individual database which clashes with the cyberpanel database requirements.
It would be great if you can fix this guys.
A lot of people are discussing this issue here