After migration to Matukio 7,0 I have trouble with the default booking form. Maybe the migration did not succeed? In the backend the default booking form will not show, and in the frontend I get this message when I try to book in a event:

YOUR FORM IS MISSING A FEE / QUANTITY SELECT, PLEASE ADD ONE IN THE FORM EDIT IN THE ADMINISTRATOR AREA, CHECK THE MIGRATION GUIDE: HTTPS://COMPOJOOM.COM/DOCUMENTATION/MATUKIO-NEW?VIEW=BOOK&PAGE=114:MIGRATION%20GUIDE%20TO%20MATUKIO%207.0.0. DID YOU LOAD AND SAVE THE BOOKING FORM ONCE?

What should I do to fix this. Is it at template issue or something else?