after creating a database then entering the details i get this message:

There are tables with the same name in the database. Change the table prefix or the database and try again.

@moneybagg
What is not clear? message is quite straightforward.

No clue how many times you have pressed the button next but probably the php has created few tables and on the next click it shows the error. Just clean the db from phpmyadmin and do NOT click several times on buttons, jist once and wait to load. It takes time to record the new tables and do the other settings needed.