Problem with creating Child Theme

Hello,
I’ve created child theme: directory names business-one-page and inside style.css and functions.php
Style.css includes header, but still getting this error:

Broken Themes

The following themes are installed but incomplete.
Name Description
Business One Page Child Template is missing. Standalone themes need to have a index.php template file. Child themes need to have a Template header in the style.css stylesheet. Delete